ASTROSAT CZTI

Data Quality Report

Orbit 57995

Creation date: 2026-06-17T10:15:28.640382
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_031T01_9000006584_57995cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57995cztM0_level2_quad_clean.evt
Size (bytes)668,171,520120,962,880
Size637.2 MB 115.4 MB
Events in quadrant A4,855,202802,115
Events in quadrant B5,517,560843,701
Events in quadrant C9,012,385691,013
Events in quadrant D4,679,142726,110

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207660
B0225300
C0327300
D0199150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86332422.803197%
B86334675.409475%
C8634117213.574241%
D8634360.416956%

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 8633 8633 164 164 1.90% 1.90%
B 8633 8633 276 276 3.20% 3.20%
C 8634 8634 1110 1110 12.86% 12.86%
D 8634 8634 29 29 0.34% 0.34%

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 10 251 1031558 4385.9 956 933 235.0
A 2 143 33016 136.53 956 933 235.0
A 3 14 30667 126.54 956 933 235.0
B 4 236 1155564 5652.77 945 909 204.3
B 10 128 309348 1510.0 945 909 204.3
B 5 185 57792 278.48 945 909 204.3
C 15 224 2603308 10668.04 895 887 243.9
C 15 201 2535088 10388.39 895 887 243.9
C 14 246 105987 430.83 895 887 243.9
D 12 110 462042 1746.3 931 891 264.1
D 8 240 101361 380.46 931 891 264.1
D 5 173 74249 277.79 931 891 264.1

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