ASTROSAT CZTI

Data Quality Report

Orbit 55126

Creation date: 2025-12-06T08:33:58.962277
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_022T16_9000006532_55126cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55126cztM0_level2_quad_clean.evt
Size (bytes)572,670,72096,471,360
Size546.1 MB 92.0 MB
Events in quadrant A3,717,388660,617
Events in quadrant B3,022,011724,726
Events in quadrant C3,442,098635,546
Events in quadrant D10,488,663425,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162672
B0141272
C0154122
D0359252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68021902.793296%
B6802520.764481%
C6802791.161423%
D6802222132.652161%

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 7962 6803 116 116 1.46% 1.71%
B 7962 6803 14 14 0.18% 0.21%
C 7962 6803 70 70 0.88% 1.03%
D 7962 6803 2244 2244 28.18% 32.99%

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 0 8 475383 2680.12 716 698 177.1
A 12 115 309715 1744.74 716 698 177.1
A 5 241 134743 756.83 716 698 177.1
B 0 63 60216 388.99 718 693 153.0
B 5 172 58408 377.18 718 693 153.0
B 12 111 18424 115.88 718 693 153.0
C 13 3 396676 2045.62 701 695 193.6
C 12 252 85257 436.84 701 695 193.6
C 15 178 82241 421.26 701 695 193.6
D 11 129 7730676 46220.14 586 562 167.2
D 2 249 58587 346.94 586 562 167.2
D 2 31 54014 319.6 586 562 167.2

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