ASTROSAT CZTI

Data Quality Report

Orbit 20180923_T02_109T01_9000002386_level2

Creation date: 2018-09-28T20:49:58.062875
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T02_109T01_9000002386cztM0_level2_bc.evt modeM0/AS1T02_109T01_9000002386cztM0_level2_quad_clean.evt
Size (bytes)12,150,106,5603,767,771,520
Size11.3 GB 3.5 GB
Events in quadrant A82,713,18523,494,657
Events in quadrant B74,079,15424,068,193
Events in quadrant C75,768,47023,010,783
Events in quadrant D114,208,90822,212,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07217820
B06771460
C06886270
D08289900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05190
B05150
C05200
D05200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063510
B063770
C056070
D063720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31222194603.029905%
B31220546621.493250%
C31218664312.059990%
D311672164155.266755%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 396707 313815 330 330 0.08% 0.11%
B 396707 313769 105 105 0.03% 0.03%
C 396707 313843 158 158 0.04% 0.05%
D 396707 313282 2214 2214 0.56% 0.71%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 13217983 3738.52 16458 16163 3531.3
A 8 247 2575014 724.62 16458 16163 3531.3
A 0 253 1738483 487.73 16458 16163 3531.3
B 5 65 1687549 541.52 16709 16330 3086.2
B 4 216 1082885 345.59 16709 16330 3086.2
B 0 229 1038042 331.06 16709 16330 3086.2
C 3 233 10266928 2800.98 15874 15788 3659.8
C 7 247 3414895 928.76 15874 15788 3659.8
C 0 207 746657 199.7 15874 15788 3659.8
D 1 52 30251669 8253.05 15990 15424 3663.6
D 2 233 8527646 2323.43 15990 15424 3663.6
D 5 222 4411933 1200.04 15990 15424 3663.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter