ASTROSAT CZTI

Data Quality Report

Orbit 57931

Creation date: 2026-06-13T02:11:48.413917
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_125T11_9000006582_57931cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57931cztM0_level2_quad_clean.evt
Size (bytes)409,826,88094,878,720
Size390.8 MB 90.5 MB
Events in quadrant A2,737,096639,285
Events in quadrant B3,847,646666,133
Events in quadrant C4,530,509576,179
Events in quadrant D3,566,624552,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127772
B0159292
C0178772
D0151392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6280190.302548%
B62802003.184713%
C62803405.414013%
D62792033.232999%

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 7490 6281 1 1 0.01% 0.02%
B 7490 6281 91 91 1.21% 1.45%
C 7490 6281 313 313 4.18% 4.98%
D 7489 6280 170 170 2.27% 2.71%

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 7 64 28885 165.8 689 674 170.1
A 3 14 21673 123.41 689 674 170.1
A 3 137 8225 44.38 689 674 170.1
B 3 238 580661 4047.15 673 648 143.3
B 0 171 146507 1017.76 673 648 143.3
B 0 63 122382 849.42 673 648 143.3
C 15 224 1897657 10754.9 642 635 176.4
C 14 254 47909 268.01 642 635 176.4
C 9 237 21778 119.87 642 635 176.4
D 8 240 285424 1558.32 648 618 182.8
D 12 110 278810 1522.13 648 618 182.8
D 8 160 95244 517.75 648 618 182.8

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