ASTROSAT CZTI

Data Quality Report

Orbit 55699

Creation date: 2026-01-15T07:33:12.853650
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_099T04_9000006540_55699cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55699cztM0_level2_quad_clean.evt
Size (bytes)560,482,560102,885,120
Size534.5 MB 98.1 MB
Events in quadrant A7,651,033600,080
Events in quadrant B3,135,600740,162
Events in quadrant C4,127,997650,535
Events in quadrant D5,252,097604,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279340
B0154520
C0179900
D0210004

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7477111714.939147%
B7477350.468102%
C74782222.968708%
D74773664.895011%

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 7477 7477 1048 1048 14.02% 14.02%
B 7477 7477 13 13 0.17% 0.17%
C 7478 7478 226 226 3.02% 3.02%
D 7477 7477 354 354 4.73% 4.73%

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 15 32 3888855 21164.72 738 717 183.7
A 7 64 442306 2403.75 738 717 183.7
A 8 206 211320 1146.4 738 717 183.7
B 9 251 43168 254.98 767 740 166.4
B 10 247 20664 119.74 767 740 166.4
B 12 111 20660 119.71 767 740 166.4
C 10 19 475572 2310.1 750 743 205.5
C 13 3 185624 899.47 750 743 205.5
C 12 252 130324 630.43 750 743 205.5
D 11 129 1976628 9402.56 747 715 210.1
D 2 120 188955 895.76 747 715 210.1
D 7 129 82249 387.99 747 715 210.1

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