ASTROSAT CZTI

Data Quality Report

Orbit 53562

Creation date: 2025-08-23T02:26:57.944519
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_004T05_9000006502_53562cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53562cztM0_level2_quad_clean.evt
Size (bytes)1,066,034,88081,066,240
Size1016.7 MB 77.3 MB
Events in quadrant A14,772,042250,961
Events in quadrant B5,930,177726,485
Events in quadrant C8,565,464565,223
Events in quadrant D9,611,554387,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490712
B0229110
C0306800
D0338060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7525520669.182724%
B75265497.294712%
C7526155620.674993%
D7526314041.722030%

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 7525 7525 4480 4480 59.53% 59.53%
B 7526 7526 479 479 6.36% 6.36%
C 7526 7526 1283 1283 17.05% 17.05%
D 7526 7526 2162 2162 28.73% 28.73%

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 3 63 7725307 61211.91 499 486 126.2
A 3 62 1776338 14071.95 499 486 126.2
A 4 239 1608578 12742.61 499 486 126.2
B 10 254 1269896 7514.88 782 756 168.9
B 2 249 1009627 5973.76 782 756 168.9
B 0 213 106758 627.66 782 756 168.9
C 15 224 3710214 18723.63 715 707 198.1
C 15 231 430240 2168.06 715 707 198.1
C 13 3 317006 1596.51 715 707 198.1
D 8 176 6740498 44667.03 519 496 150.9
D 2 120 136298 899.98 519 496 150.9
D 3 12 128776 850.13 519 496 150.9

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