ASTROSAT CZTI

Data Quality Report

Orbit 58105

Creation date: 2026-06-24T18:54:02.442893
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_042T02_9000006586_58105cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58105cztM0_level2_quad_clean.evt
Size (bytes)708,200,64088,655,040
Size675.4 MB 84.5 MB
Events in quadrant A3,298,145696,396
Events in quadrant B8,946,598569,648
Events in quadrant C3,453,221657,030
Events in quadrant D10,004,975301,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141822
B0312632
C0146642
D0341573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65981051.591391%
B6598193429.311913%
C65981031.561079%
D6597361754.827952%

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 7763 6598 20 20 0.26% 0.30%
B 7763 6598 1583 1583 20.39% 23.99%
C 7763 6598 35 35 0.45% 0.53%
D 7761 6596 2836 2836 36.54% 43.00%

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 10 251 149207 761.08 787 767 195.0
A 3 61 31682 158.51 787 767 195.0
A 4 3 26261 130.71 787 767 195.0
B 10 128 3391166 22926.75 688 663 147.9
B 5 172 2128755 14390.26 688 663 147.9
B 2 249 291807 1968.73 688 663 147.9
C 12 252 218728 1060.56 752 745 205.5
C 9 38 119895 579.7 752 745 205.5
C 15 208 55836 268.04 752 745 205.5
D 12 110 7263137 47999.53 532 509 151.3
D 8 160 287788 1898.66 532 509 151.3
D 3 224 158086 1041.44 532 509 151.3

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