ASTROSAT CZTI

Data Quality Report

Orbit 58485

Creation date: 2026-07-20T08:27:40.793007
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_58485cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58485cztM0_level2_quad_clean.evt
Size (bytes)474,721,92096,520,320
Size452.7 MB 92.0 MB
Events in quadrant A3,755,486628,065
Events in quadrant B5,766,282642,592
Events in quadrant C3,900,320607,819
Events in quadrant D3,625,245572,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159302
B0217582
C0163133
D0156662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67631862.750259%
B67636329.344965%
C67622163.194321%
D6763961.419488%

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 9334 6946 80 80 0.86% 1.15%
B 9334 6946 285 285 3.05% 4.10%
C 9332 6944 126 126 1.35% 1.81%
D 9334 6946 64 64 0.69% 0.92%

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 12 80 238188 1258.89 765 744 188.6
A 10 17 194843 1029.08 765 744 188.6
A 12 114 177562 937.46 765 744 188.6
B 5 172 1680632 10506.03 744 717 159.9
B 2 249 878233 5487.9 744 717 159.9
B 6 37 74255 459.9 744 717 159.9
C 1 12 325728 1589.6 742 738 204.4
C 6 223 206325 1005.57 742 738 204.4
C 4 5 195593 953.08 742 738 204.4
D 3 12 262445 1250.16 739 707 209.4
D 2 31 147747 702.32 739 707 209.4
D 8 240 136966 650.82 739 707 209.4

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