ASTROSAT CZTI

Data Quality Report

Orbit 54660

Creation date: 2025-11-05T11:07:15.572472
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_066T07_9000006522_54660cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54660cztM0_level2_quad_clean.evt
Size (bytes)621,074,88092,684,160
Size592.3 MB 88.4 MB
Events in quadrant A3,511,450658,762
Events in quadrant B3,597,827708,488
Events in quadrant C4,140,597609,299
Events in quadrant D11,233,661374,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149772
B0151372
C0168482
D0379532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65252013.080460%
B65251332.038314%
C65253665.609195%
D6525280042.911877%

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 7670 6525 95 95 1.24% 1.46%
B 7670 6525 20 20 0.26% 0.31%
C 7670 6526 257 257 3.35% 3.94%
D 7670 6525 2407 2407 31.38% 36.89%

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 11 3 298856 1623.61 750 733 183.6
A 13 248 203810 1105.98 750 733 183.6
A 7 14 40482 216.48 750 733 183.6
B 5 172 187270 1163.14 742 717 160.4
B 7 0 159263 988.52 742 717 160.4
B 5 185 61236 377.33 742 717 160.4
C 14 254 458439 2317.04 724 719 197.5
C 13 3 322701 1629.91 724 719 197.5
C 9 38 202329 1020.57 724 719 197.5
D 11 129 6127220 36052.45 595 567 169.9
D 2 172 1553964 9141.01 595 567 169.9
D 2 62 714688 4202.26 595 567 169.9

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