ASTROSAT CZTI

Data Quality Report

Orbit 55403

Creation date: 2025-12-25T00:23:40.422058
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_099T01_9000006536_55403cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55403cztM0_level2_quad_clean.evt
Size (bytes)450,538,56097,948,800
Size429.7 MB 93.4 MB
Events in quadrant A3,677,164659,015
Events in quadrant B2,879,219711,447
Events in quadrant C2,953,422632,229
Events in quadrant D6,654,233503,201

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158752
B0135332
C0138322
D0244202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65981632.470446%
B6598360.545620%
C6597420.636653%
D6597117117.750493%

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 7788 6599 117 117 1.50% 1.77%
B 7788 6599 3 3 0.04% 0.05%
C 7787 6598 12 12 0.15% 0.18%
D 7787 6598 1159 1159 14.88% 17.57%

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 12 115 462142 2637.59 710 691 175.0
A 7 14 180414 1027.27 710 691 175.0
A 0 8 134055 762.29 710 691 175.0
B 5 236 30848 203.81 702 678 148.0
B 5 172 26904 177.17 702 678 148.0
B 10 247 19210 125.19 702 678 148.0
C 9 38 65403 339.61 697 689 190.6
C 12 2 47449 245.39 697 689 190.6
C 13 3 26127 133.49 697 689 190.6
D 11 129 1471210 8029.91 646 617 183.1
D 10 181 1417866 7738.64 646 617 183.1
D 8 160 667666 3642.3 646 617 183.1

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