ASTROSAT CZTI

Data Quality Report

Orbit 54898

Creation date: 2025-11-21T01:07:32.347322
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/AS1A14_039T06_9000006526_54898cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54898cztM0_level2_quad_clean.evt
Size (bytes)671,376,960109,707,840
Size640.3 MB 104.6 MB
Events in quadrant A6,859,298729,605
Events in quadrant B4,533,089785,970
Events in quadrant C6,636,390625,219
Events in quadrant D6,213,309633,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259995
B01931520
C02556726
D02401625

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78823824.846486%
B78752993.796825%
C7878110414.013709%
D78706047.674714%

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 7884 7884 269 269 3.41% 3.41%
B 7884 7881 130 130 1.65% 1.65%
C 7884 7882 813 813 10.31% 10.31%
D 7884 7878 474 474 6.01% 6.02%

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 3 14 3099868 14453.97 864 840 214.4
A 0 8 177331 823.16 864 840 214.4
A 12 115 129470 599.93 864 840 214.4
B 10 247 489306 2657.25 853 819 183.8
B 5 236 331941 1801.22 853 819 183.8
B 5 185 252568 1369.45 853 819 183.8
C 4 5 2249796 10275.51 807 800 218.9
C 15 209 697369 3182.58 807 800 218.9
C 14 254 243815 1110.32 807 800 218.9
D 2 249 588168 2530.55 828 794 232.1
D 11 129 471859 2029.46 828 794 232.1
D 15 94 430267 1850.27 828 794 232.1

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