ASTROSAT CZTI

Data Quality Report

Orbit 34584

Creation date: 2022-02-19T21:19:56.902394
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_176T05_9000004944_34584cztM0_level2.evt modeM0/AS1A05_176T05_9000004944_34584cztM0_level2_quad_clean.evt
Size (bytes)557,602,56056,298,240
Size531.8 MB 53.7 MB
Events in quadrant A2,558,240349,124
Events in quadrant B2,849,084352,054
Events in quadrant C2,851,351353,271
Events in quadrant D8,276,266285,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107943
B0115542
C0113772
D0283042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211110.211092%
B5211350.671656%
C5211430.825178%
D5211137526.386490%

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 7154 5212 3 3 0.04% 0.06%
B 7154 5212 21 21 0.29% 0.40%
C 7154 5212 28 28 0.39% 0.54%
D 7154 5212 1397 1397 19.53% 26.80%

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 10 83 44386 343.58 633 621 127.4
A 9 143 23969 183.3 633 621 127.4
A 15 174 18002 136.45 633 621 127.4
B 5 172 148913 1222.59 627 611 121.3
B 0 189 114809 941.44 627 611 121.3
B 0 190 52588 428.5 627 611 121.3
C 15 214 222517 1537.72 616 621 144.3
C 0 10 121919 840.59 616 621 144.3
C 14 67 50405 345.0 616 621 144.3
D 8 195 3778752 27233.3 561 545 138.7
D 5 223 1039442 7488.37 561 545 138.7
D 1 52 582415 4194.12 561 545 138.7

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