ASTROSAT CZTI

Data Quality Report

Orbit 55056

Creation date: 2025-12-01T21:34:28.805601
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_025T01_9000006530_55056cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55056cztM0_level2_quad_clean.evt
Size (bytes)638,055,360143,280,000
Size608.5 MB 136.6 MB
Events in quadrant A4,766,782942,813
Events in quadrant B5,714,387981,383
Events in quadrant C5,362,142898,799
Events in quadrant D6,986,167811,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234521779
B0266042164
C0251371855
D0301112390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022616
B022618
C022620
D022614

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101802112.072692%
B101115615.548413%
C101752302.260442%
D101394934.862412%

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 12823 10492 20 20 0.16% 0.19%
B 12823 10463 264 264 2.06% 2.52%
C 12822 10500 103 103 0.80% 0.98%
D 12823 10486 307 307 2.39% 2.93%

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 164641 584.66 1142 1115 279.7
A 6 161 81037 285.75 1142 1115 279.7
A 9 129 21828 74.06 1142 1115 279.7
B 4 81 1156731 4868.35 1101 1057 237.4
B 0 182 70463 292.38 1101 1057 237.4
B 5 185 69848 289.79 1101 1057 237.4
C 12 250 369834 1219.98 1106 1097 302.2
C 13 3 194923 641.28 1106 1097 302.2
C 6 223 125170 410.5 1106 1097 302.2
D 6 239 444284 1433.1 1084 1037 309.3
D 11 129 442141 1426.18 1084 1037 309.3
D 3 12 345767 1114.58 1084 1037 309.3

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