ASTROSAT CZTI

Data Quality Report

Orbit 56212

Creation date: 2026-02-17T12:09:21.656702
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_083T04_9000006550_56212cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56212cztM0_level2_quad_clean.evt
Size (bytes)754,473,60079,899,840
Size719.5 MB 76.2 MB
Events in quadrant A12,547,068291,100
Events in quadrant B3,477,688670,933
Events in quadrant C7,924,069436,525
Events in quadrant D3,471,867564,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417481
B0148791
C0280121
D0151581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6537363055.530060%
B65371392.126358%
C6538204731.309269%
D65381352.064852%

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 7481 6536 3577 3577 47.81% 54.73%
B 7482 6537 46 46 0.61% 0.70%
C 7483 6538 1839 1839 24.58% 28.13%
D 7483 6538 115 115 1.54% 1.76%

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 12 115 7679554 63678.9 482 471 120.6
A 7 64 1306280 10828.44 482 471 120.6
A 8 176 771991 6397.84 482 471 120.6
B 0 171 147928 1006.95 690 666 146.2
B 1 255 139142 946.87 690 666 146.2
B 5 185 124133 844.24 690 666 146.2
C 12 254 5394036 34846.38 564 557 154.8
C 12 252 173306 1116.1 564 557 154.8
C 9 237 61311 392.52 564 557 154.8
D 6 239 469862 2480.98 674 643 189.1
D 13 153 80864 424.17 674 643 189.1
D 2 120 72622 380.59 674 643 189.1

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