ASTROSAT CZTI

Data Quality Report

Orbit 52978

Creation date: 2025-07-15T10:01:43.516187
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/AS1A13_003T01_9000006486_52978cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52978cztM0_level2_quad_clean.evt
Size (bytes)1,073,548,80063,244,800
Size1023.8 MB 60.3 MB
Events in quadrant A14,786,47569,647
Events in quadrant B3,077,185632,786
Events in quadrant C11,564,031381,206
Events in quadrant D9,845,677404,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0479170
B0134440
C0384860
D0334760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60376037100.000000%
B60371542.550936%
C6038338356.028486%
D6038261743.342166%

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 7047 6038 5657 5657 80.28% 93.69%
B 7047 6038 14 14 0.20% 0.23%
C 7048 6039 3149 3149 44.68% 52.14%
D 7048 6039 2431 2431 34.49% 40.26%

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 14330894 568214.01 94 91 25.2
A 0 8 46449 1838.09 94 91 25.2
A 13 248 6048 236.19 94 91 25.2
B 0 143 236539 1703.82 651 629 138.5
B 5 185 42509 302.47 651 629 138.5
B 0 151 30768 217.67 651 629 138.5
C 7 80 8194263 66413.72 449 445 123.4
C 12 254 504116 4082.43 449 445 123.4
C 13 3 210439 1702.07 449 445 123.4
D 8 176 3371571 23618.6 498 476 142.7
D 0 5 2471886 17315.21 498 476 142.7
D 2 62 579183 4054.54 498 476 142.7

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