ASTROSAT CZTI

Data Quality Report

Orbit 20151021_P01_162T05_9000000046_level2

Creation date: 2016-09-06T18:00:17.859110
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/AS1P01_162T05_9000000046cztM0_level2_bc.evt modeM0/AS1P01_162T05_9000000046cztM0_level2_quad_clean.evt
Size (bytes)1,784,165,760345,623,040
Size1.7 GB 329.6 MB
Events in quadrant A10,662,5402,122,355
Events in quadrant B24,272,4271,975,149
Events in quadrant C6,582,5032,143,566
Events in quadrant D10,373,5862,062,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06440
C06440
D06440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510740
B01945380
C01273110
D01356490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3144915855.039906%
B31449675621.482400%
C31449870.276638%
D314498572.725047%

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 49383 31450 217 217 0.44% 0.69%
B 49383 31449 1495 1495 3.03% 4.75%
C 49383 31449 30 30 0.06% 0.10%
D 49383 31448 86 86 0.17% 0.27%

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 0 69 4716772 17853.04 1260 1231 264.1
A 0 238 462444 1746.15 1260 1231 264.1
A 12 133 118168 442.72 1260 1231 264.1
B 2 2 18786173 82848.06 1229 1187 226.7
B 0 230 114674 500.52 1229 1187 226.7
B 0 23 57636 248.96 1229 1187 226.7
C 5 234 677835 2455.32 1283 1257 275.6
C 1 1 259127 935.82 1283 1257 275.6
C 3 159 233989 844.59 1283 1257 275.6
D 13 7 2003565 7111.16 1255 1216 281.6
D 2 25 887536 3147.68 1255 1216 281.6
D 7 85 498048 1764.45 1255 1216 281.6

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