ASTROSAT CZTI

Data Quality Report

Orbit 58486

Creation date: 2026-07-20T10:26:04.754584
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_044T04_9000006592_58486cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58486cztM0_level2_quad_clean.evt
Size (bytes)564,027,840100,114,560
Size537.9 MB 95.5 MB
Events in quadrant A4,189,142657,225
Events in quadrant B7,600,981649,395
Events in quadrant C4,064,132631,946
Events in quadrant D4,457,328583,883

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017532103
B027964241
C01734186
D01859087

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01520
C01521
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73042182.984666%
B730398113.432836%
C73042393.272180%
D73032944.025743%

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 9578 7495 79 79 0.82% 1.05%
B 9578 7490 460 460 4.80% 6.14%
C 9577 7490 135 135 1.41% 1.80%
D 9577 7492 235 235 2.45% 3.14%

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 10 17 473993 2320.41 827 805 203.9
A 12 80 172980 844.31 827 805 203.9
A 3 14 148429 723.92 827 805 203.9
B 5 172 3617478 20945.77 797 767 172.7
B 2 249 424819 2455.85 797 767 172.7
B 0 157 205242 1184.19 797 767 172.7
C 1 12 463303 2095.58 800 794 220.7
C 4 5 160865 725.26 800 794 220.7
C 6 223 71647 321.03 800 794 220.7
D 3 12 568431 2523.24 791 756 225.0
D 2 153 453835 2013.88 791 756 225.0
D 2 31 128934 569.74 791 756 225.0

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