ASTROSAT CZTI

Data Quality Report

Orbit 57788

Creation date: 2026-06-03T11:12:53.923014
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_083T16_9000006580_57788cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57788cztM0_level2_quad_clean.evt
Size (bytes)501,937,92095,564,160
Size478.7 MB 91.1 MB
Events in quadrant A2,821,112643,372
Events in quadrant B4,022,091684,568
Events in quadrant C7,855,140537,894
Events in quadrant D3,365,030564,108

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134961
B0166521
C0280834
D0149441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6654520.781485%
B66541672.509769%
C6654102515.404268%
D66541311.968741%

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 7554 6655 0 0 0.00% 0.00%
B 7554 6655 56 56 0.74% 0.84%
C 7554 6655 834 834 11.04% 12.53%
D 7554 6655 71 71 0.94% 1.07%

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 3 128 37418 211.89 705 688 173.3
A 4 158 19907 110.87 705 688 173.3
A 7 64 9178 48.98 705 688 173.3
B 4 80 496867 3338.28 698 670 148.6
B 10 247 493624 3316.46 698 670 148.6
B 0 63 66760 444.64 698 670 148.6
C 9 38 3392953 19081.77 653 647 177.8
C 15 224 1670546 9393.21 653 647 177.8
C 14 254 90189 503.68 653 647 177.8
D 8 160 288688 1510.53 677 645 190.7
D 2 153 185327 968.49 677 645 190.7
D 3 12 98058 510.84 677 645 190.7

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