ASTROSAT CZTI

Data Quality Report

Orbit 55184

Creation date: 2025-12-10T06:22:56.642107
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_022T16_9000006532_55184cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55184cztM0_level2_quad_clean.evt
Size (bytes)437,088,960108,564,480
Size416.8 MB 103.5 MB
Events in quadrant A4,269,657704,635
Events in quadrant B3,362,973774,739
Events in quadrant C3,652,478680,210
Events in quadrant D4,328,218620,791

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177962
B0154782
C0160852
D0182612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72801822.500000%
B7280630.865385%
C7281771.057547%
D72812733.749485%

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 9595 7282 155 155 1.62% 2.13%
B 9595 7282 16 16 0.17% 0.22%
C 9596 7283 41 41 0.43% 0.56%
D 9596 7283 185 185 1.93% 2.54%

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 3 78 636837 3297.76 780 761 192.9
A 0 8 264654 1368.16 780 761 192.9
A 4 249 188436 973.01 780 761 192.9
B 10 247 113542 666.86 784 757 169.1
B 2 249 68505 400.57 784 757 169.1
B 5 185 32284 186.41 784 757 169.1
C 12 250 159116 755.87 768 762 209.5
C 1 16 152427 723.94 768 762 209.5
C 10 22 102015 483.31 768 762 209.5
D 2 249 942207 4401.29 754 721 213.9
D 11 129 160625 747.52 754 721 213.9
D 5 173 57813 266.9 754 721 213.9

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