ASTROSAT CZTI

Data Quality Report

Orbit 53994

Creation date: 2025-09-22T12:50:14.656403
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_041T01_9000006510_53994cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53994cztM0_level2_quad_clean.evt
Size (bytes)809,498,88075,337,920
Size772.0 MB 71.8 MB
Events in quadrant A3,166,916634,352
Events in quadrant B6,329,111540,967
Events in quadrant C6,112,674511,171
Events in quadrant D13,862,504150,010

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141162
B0234772
C0227647
D0455922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368801.256281%
B6368145822.895729%
C6368119318.734296%
D6368483875.973618%

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 7548 6369 51 51 0.68% 0.80%
B 7548 6369 1115 1115 14.77% 17.51%
C 7547 6368 1112 1112 14.73% 17.46%
D 7548 6368 4353 4353 57.67% 68.36%

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 15 174 296273 1763.89 674 655 167.6
A 4 3 84221 498.62 674 655 167.6
A 8 6 51022 300.53 674 655 167.6
B 4 81 3477394 27375.95 599 578 127.0
B 0 213 269657 2118.69 599 578 127.0
B 7 252 49538 385.5 599 578 127.0
C 1 241 3179829 18736.1 613 607 169.7
C 12 2 133350 782.29 613 607 169.7
C 14 80 105164 616.19 613 607 169.7
D 8 176 11448393 129776.21 304 289 88.2
D 2 165 833609 9446.55 304 289 88.2
D 6 239 199527 2258.57 304 289 88.2

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