ASTROSAT CZTI

Data Quality Report

Orbit 55434

Creation date: 2025-12-27T03:40:23.512744
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_099T01_9000006536_55434cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55434cztM0_level2_quad_clean.evt
Size (bytes)517,394,88084,309,120
Size493.4 MB 80.4 MB
Events in quadrant A3,313,729561,585
Events in quadrant B3,275,752606,468
Events in quadrant C3,278,125528,005
Events in quadrant D8,756,319382,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150092
B0148182
C0150392
D0307232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67931121.648756%
B6794540.794819%
C6794881.295261%
D6794193228.436856%

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 7876 7068 53 53 0.67% 0.75%
B 7877 7069 10 10 0.13% 0.14%
C 7877 7069 58 58 0.74% 0.82%
D 7877 7045 1713 1713 21.75% 24.32%

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 78 438976 2479.11 712 694 176.8
A 4 159 45550 253.72 712 694 176.8
A 4 3 31743 175.63 712 694 176.8
B 5 185 181463 1208.43 706 679 149.6
B 9 254 93571 620.92 706 679 149.6
B 10 247 61288 405.13 706 679 149.6
C 15 1 372104 1933.22 701 692 192.1
C 15 147 43379 222.19 701 692 192.1
C 12 252 27357 138.79 701 692 192.1
D 11 129 5703461 32894.89 609 582 173.4
D 10 181 157616 905.79 609 582 173.4
D 3 12 151404 869.96 609 582 173.4

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