ASTROSAT CZTI

Data Quality Report

Orbit 57948

Creation date: 2026-06-14T05:29:19.706339
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_57948cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57948cztM0_level2_quad_clean.evt
Size (bytes)641,352,96096,972,480
Size611.6 MB 92.5 MB
Events in quadrant A3,232,412683,596
Events in quadrant B4,226,923711,490
Events in quadrant C4,091,783637,830
Events in quadrant D11,642,920412,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147863
B0175702
C0172502
D0395052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7047410.581808%
B70483605.107832%
C70481992.823496%
D7048247535.116345%

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 8977 7049 7 7 0.08% 0.10%
B 8978 7050 163 163 1.82% 2.31%
C 8978 7050 143 143 1.59% 2.03%
D 8978 7049 2488 2488 27.71% 35.30%

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 7 64 69816 356.8 782 763 193.5
A 3 14 69607 355.72 782 763 193.5
A 13 248 24777 124.08 782 763 193.5
B 3 238 515225 3152.95 761 735 163.2
B 5 185 376906 2305.29 761 735 163.2
B 10 247 121598 740.69 761 735 163.2
C 15 224 964433 4729.07 749 741 203.8
C 14 254 70760 343.6 749 741 203.8
C 1 16 63906 309.97 749 741 203.8
D 12 110 8856557 49798.97 622 594 177.8
D 2 31 72496 404.32 622 594 177.8
D 8 240 62653 348.97 622 594 177.8

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