ASTROSAT CZTI

Data Quality Report

Orbit 53789

Creation date: 2025-09-07T08:38:58.044991
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_022T04_9000006506_53789cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53789cztM0_level2_quad_clean.evt
Size (bytes)892,889,28061,047,360
Size851.5 MB 58.2 MB
Events in quadrant A13,338,494136,777
Events in quadrant B3,276,813586,354
Events in quadrant C6,066,350439,532
Events in quadrant D9,919,384278,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436173
B0140411
C0221271
D0335031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5824454878.090659%
B58253005.150215%
C5825113319.450644%
D5825296950.969957%

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 6954 5825 4521 4521 65.01% 77.61%
B 6955 5826 150 150 2.16% 2.57%
C 6955 5826 1044 1044 15.01% 17.92%
D 6955 5826 2933 2933 42.17% 50.34%

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 11115593 124696.56 357 347 89.1
A 8 249 359754 4032.01 357 347 89.1
A 3 78 237547 2661.03 357 347 89.1
B 5 185 569019 4361.87 609 587 130.3
B 8 234 105713 806.69 609 587 130.3
B 10 245 54103 410.66 609 587 130.3
C 15 224 1847519 12209.94 542 537 151.3
C 1 241 1809199 11956.61 542 537 151.3
C 12 2 103030 677.56 542 537 151.3
D 7 70 5983027 42446.17 486 465 140.9
D 2 153 1350907 9581.36 486 465 140.9
D 1 241 324743 2300.75 486 465 140.9

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