ASTROSAT CZTI

Data Quality Report

Orbit 20190917_A06_005T09_9000003168_level2

Creation date: 2025-12-03T17:24:10.183300
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/AS1A06_005T09_9000003168cztM0_level2.fits modeM0/AS1A06_005T09_9000003168cztM0_level2_quad_clean.evt
Size (bytes)243,538,560146,076,480
Size232.3 MB 139.3 MB
Events in quadrant A1,521,490725,664
Events in quadrant B1,472,414737,933
Events in quadrant C1,493,884714,556
Events in quadrant D1,294,476650,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05460
C05480
D05460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484370
B0506670
C0500130
D0591270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228993241.414909%
B229004471.951965%
C228975532.415164%
D229037343.204820%

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 25494 18194 0 0 0.00% 0.00%
B 25494 18193 0 0 0.00% 0.00%
C 25494 18192 0 0 0.00% 0.00%
D 25492 18189 0 0 0.00% 0.00%

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 29 1446 11.07 395 372 97.0
A 7 110 1208 8.62 395 372 97.0
A 0 30 1141 7.93 395 372 97.0
B 2 9 1157 9.91 389 373 79.1
B 2 8 1003 7.96 389 373 79.1
B 5 128 987 7.76 389 373 79.1
C 12 241 1033 6.63 394 372 99.7
C 7 111 1014 6.44 394 372 99.7
C 9 209 1012 6.42 394 372 99.7
D 7 3 982 6.59 370 340 97.4
D 10 189 916 5.92 370 340 97.4
D 6 67 908 5.83 370 340 97.4

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