ASTROSAT CZTI

Data Quality Report

Orbit 57362

Creation date: 2026-05-05T19:16:19.534277
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_102T01_9000006572_57362cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57362cztM0_level2_quad_clean.evt
Size (bytes)484,588,80086,374,080
Size462.1 MB 82.4 MB
Events in quadrant A2,900,699593,638
Events in quadrant B2,843,985632,920
Events in quadrant C7,886,171444,955
Events in quadrant D3,832,151517,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130501
B0129161
C0276841
D0156291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6105550.900901%
B6106771.261055%
C6106161726.482149%
D61062724.454635%

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 7145 6105 10 10 0.14% 0.16%
B 7146 6106 28 28 0.39% 0.46%
C 7146 6106 1436 1436 20.10% 23.52%
D 7146 6107 234 234 3.27% 3.83%

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 0 12 114900 699.05 665 649 163.4
A 3 14 102011 620.19 665 649 163.4
A 8 4 56826 343.72 665 649 163.4
B 5 185 89137 630.21 650 626 140.4
B 0 213 47953 336.97 650 626 140.4
B 7 252 45236 317.63 650 626 140.4
C 15 224 5501949 35680.07 565 559 154.2
C 12 252 103004 664.42 565 559 154.2
C 14 254 30898 196.77 565 559 154.2
D 2 249 341128 1910.25 630 603 178.3
D 3 12 301572 1688.35 630 603 178.3
D 15 142 218008 1219.58 630 603 178.3

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