ASTROSAT CZTI

Data Quality Report

Orbit 56597

Creation date: 2026-03-15T08:21:18.558621
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_083T06_9000006558_56597cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56597cztM0_level2_quad_clean.evt
Size (bytes)482,356,80088,747,200
Size460.0 MB 84.6 MB
Events in quadrant A3,902,866587,959
Events in quadrant B4,958,581577,756
Events in quadrant C3,884,031544,686
Events in quadrant D4,553,363478,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168362
B0199342
C0170802
D0189162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71532042.851950%
B715381511.393821%
C71542303.214985%
D71544466.234275%

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 8975 7437 118 118 1.31% 1.59%
B 8975 7435 583 583 6.50% 7.84%
C 8976 7438 116 116 1.29% 1.56%
D 8976 7437 382 382 4.26% 5.14%

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 4 95 368054 1954.93 759 739 187.9
A 0 8 332556 1766.01 759 739 187.9
A 3 14 121085 640.51 759 739 187.9
B 5 185 1841379 11868.03 727 701 155.1
B 5 236 109830 703.62 727 701 155.1
B 4 21 40499 256.6 727 701 155.1
C 6 223 338597 1688.3 737 731 200.1
C 15 208 232341 1157.34 737 731 200.1
C 14 254 149773 744.76 737 731 200.1
D 6 239 585758 2920.25 716 683 200.4
D 2 249 540585 2694.78 716 683 200.4
D 7 96 185478 922.36 716 683 200.4

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