ASTROSAT CZTI

Data Quality Report

Orbit 53136

Creation date: 2025-07-26T12:14:46.767110
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_011T07_9000006488_53136cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53136cztM0_level2_quad_clean.evt
Size (bytes)759,516,48066,841,920
Size724.3 MB 63.7 MB
Events in quadrant A14,731,558189
Events in quadrant B4,008,632588,441
Events in quadrant C4,198,608534,749
Events in quadrant D4,723,962493,159

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476651
B0160211
C0165641
D0182101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5822582099.965648%
B58223015.170045%
C58221833.143250%
D58223726.389557%

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 7052 5823 5155 5155 73.10% 88.53%
B 7052 5823 113 113 1.60% 1.94%
C 7052 5823 155 155 2.20% 2.66%
D 7052 5823 354 354 5.02% 6.08%

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 13912327 362715.97 146 143 38.4
A 0 8 151075 3935.07 146 143 38.4
A 4 249 39706 1031.48 146 143 38.4
B 10 254 870181 7012.14 586 566 124.0
B 4 171 221542 1781.84 586 566 124.0
B 0 213 218163 1754.59 586 566 124.0
C 15 224 1133790 7178.89 569 563 157.9
C 13 3 123811 780.76 569 563 157.9
C 12 252 88409 556.5 569 563 157.9
D 8 176 529186 3241.36 561 534 163.1
D 6 42 417514 2556.66 561 534 163.1
D 2 62 367911 2252.53 561 534 163.1

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