ASTROSAT CZTI

Data Quality Report

Orbit 55055

Creation date: 2025-12-01T16:51:18.924111
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_55055cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55055cztM0_level2_quad_clean.evt
Size (bytes)406,091,520100,794,240
Size387.3 MB 96.1 MB
Events in quadrant A3,172,466667,971
Events in quadrant B3,080,180723,599
Events in quadrant C4,287,997600,344
Events in quadrant D3,963,267586,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144882
B0142382
C0176912
D0165732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6787981.443937%
B67871221.797554%
C67874396.468248%
D67871692.490055%

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 7827 6788 9 9 0.11% 0.13%
B 7827 6788 11 11 0.14% 0.16%
C 7827 6788 349 349 4.46% 5.14%
D 7827 6788 103 103 1.32% 1.52%

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 154442 832.6 758 740 184.6
A 6 161 23884 125.37 758 740 184.6
A 15 32 20425 106.63 758 740 184.6
B 5 185 82947 505.56 747 719 162.6
B 12 111 19797 117.3 747 719 162.6
B 11 111 18320 108.22 747 719 162.6
C 12 250 1108952 5618.48 717 710 197.2
C 6 223 118209 595.69 717 710 197.2
C 13 3 94000 472.95 717 710 197.2
D 3 12 210491 1023.01 723 690 205.1
D 10 181 139317 675.96 723 690 205.1
D 12 6 132211 641.31 723 690 205.1

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