ASTROSAT CZTI

Data Quality Report

Orbit 53792

Creation date: 2025-09-07T18:13:25.163617
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_022T04_9000006506_53792cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53792cztM0_level2_quad_clean.evt
Size (bytes)798,955,20082,103,040
Size761.9 MB 78.3 MB
Events in quadrant A11,327,878344,722
Events in quadrant B4,016,855661,976
Events in quadrant C6,035,259537,452
Events in quadrant D7,669,343468,857

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383861
B0167721
C0228811
D0275255

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6781325748.031264%
B67813435.058251%
C678295614.096137%
D6781144921.368530%

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 7591 6782 2954 2954 38.91% 43.56%
B 7591 6782 174 174 2.29% 2.57%
C 7592 6783 737 737 9.71% 10.87%
D 7591 6782 1185 1185 15.61% 17.47%

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 63 8761247 63932.49 558 546 137.0
A 8 249 132489 962.87 558 546 137.0
A 4 249 75522 547.15 558 546 137.0
B 8 234 472053 3096.16 705 679 152.2
B 5 185 295691 1937.75 705 679 152.2
B 4 171 233452 1528.94 705 679 152.2
C 15 224 2084096 11565.98 650 644 180.1
C 1 241 1101274 6109.99 650 644 180.1
C 12 2 109080 601.97 650 644 180.1
D 1 241 2595620 14463.05 624 595 179.4
D 8 176 1329441 7406.16 624 595 179.4
D 2 172 560582 3121.02 624 595 179.4

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