ASTROSAT CZTI

Data Quality Report

Orbit 58595

Creation date: 2026-07-27T19:12:18.202829
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_58595cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58595cztM0_level2_quad_clean.evt
Size (bytes)783,489,60075,680,640
Size747.2 MB 72.2 MB
Events in quadrant A4,744,969595,291
Events in quadrant B7,153,068578,756
Events in quadrant C12,924,750128,487
Events in quadrant D3,684,223543,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184611
B0257401
C0427441
D0153322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63793415.345665%
B6379112217.588964%
C6379510379.996865%
D63791882.947170%

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 7214 6379 230 230 3.19% 3.61%
B 7213 6378 802 802 11.12% 12.57%
C 7213 6378 4317 4317 59.85% 67.69%
D 7214 6379 139 139 1.93% 2.18%

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 14 936625 5400.57 699 681 173.3
A 12 114 427551 2463.12 699 681 173.3
A 10 17 269826 1553.01 699 681 173.3
B 5 172 3012264 20583.09 671 646 146.3
B 2 249 663523 4530.47 671 646 146.3
B 6 255 211369 1440.2 671 646 146.3
C 15 164 11666927 168482.8 248 246 69.2
C 2 12 106620 1536.19 248 246 69.2
C 12 252 78332 1127.67 248 246 69.2
D 2 249 505090 2578.66 689 658 195.6
D 8 160 117768 598.67 689 658 195.6
D 3 12 92591 469.96 689 658 195.6

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