ASTROSAT CZTI

Data Quality Report

Orbit 52902

Creation date: 2025-07-16T16:45:03.354422
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/AS1C09_011T06_9000006484_52902cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52902cztM0_level2_quad_clean.evt
Size (bytes)897,451,20061,496,640
Size855.9 MB 58.6 MB
Events in quadrant A9,875,910325,037
Events in quadrant B3,288,733588,377
Events in quadrant C13,041,852134,181
Events in quadrant D6,566,225409,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332441
B0139331
C0427431
D0234782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5792290550.155387%
B57922223.832873%
C5792457078.901934%
D5791130922.604041%

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 6887 5793 2784 2784 40.42% 48.06%
B 6886 5792 99 99 1.44% 1.71%
C 6887 5793 4419 4419 64.16% 76.28%
D 6886 5792 1063 1063 15.44% 18.35%

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 9 191 7442732 62521.29 472 459 119.0
A 8 249 109190 913.43 472 459 119.0
A 12 17 82991 693.34 472 459 119.0
B 1 255 548387 4286.18 600 582 127.8
B 12 32 126023 981.48 600 582 127.8
B 5 185 50779 392.75 600 582 127.8
C 15 198 11584300 164214.48 248 245 70.5
C 2 12 237459 3362.72 248 245 70.5
C 7 80 138590 1961.17 248 245 70.5
D 8 176 2103482 13897.85 528 505 151.3
D 2 153 581574 3840.09 528 505 151.3
D 10 172 530665 3503.65 528 505 151.3

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