ASTROSAT CZTI

Data Quality Report

Orbit 52267

Creation date: 2025-07-21T20:26:50.212486
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_011T05_9000006474_52267cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52267cztM0_level2_quad_clean.evt
Size (bytes)761,981,76075,813,120
Size726.7 MB 72.3 MB
Events in quadrant A3,711,734600,840
Events in quadrant B6,447,493593,849
Events in quadrant C13,694,92295,029
Events in quadrant D3,840,222546,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155861
B0237371
C0451391
D0161021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65792734.149567%
B658091513.905775%
C6580572887.051672%
D65801702.583587%

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 7349 6580 124 124 1.69% 1.88%
B 7350 6581 517 517 7.03% 7.86%
C 7349 6579 4181 4181 56.89% 63.55%
D 7350 6581 72 72 0.98% 1.09%

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 4 249 169841 997.38 681 661 169.6
A 13 248 167189 981.74 681 661 169.6
A 11 3 160066 939.75 681 661 169.6
B 12 32 1520453 11048.96 642 619 137.6
B 10 254 609475 4426.29 642 619 137.6
B 0 213 294751 2138.3 642 619 137.6
C 15 158 9179115 103568.14 315 312 88.6
C 15 224 2249510 25378.61 315 312 88.6
C 15 178 199013 2242.02 315 312 88.6
D 8 176 691333 3624.72 666 634 190.6
D 11 176 94494 492.57 666 634 190.6
D 2 120 59138 307.02 666 634 190.6

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