ASTROSAT CZTI

Data Quality Report

Orbit 55165

Creation date: 2025-12-09T10:29:23.545913
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_55165cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55165cztM0_level2_quad_clean.evt
Size (bytes)475,493,760100,010,880
Size453.5 MB 95.4 MB
Events in quadrant A4,956,407643,468
Events in quadrant B4,169,555691,976
Events in quadrant C4,122,334612,112
Events in quadrant D3,804,765589,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194992
B0178193
C0173422
D0165012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70552964.195606%
B70552844.025514%
C70552553.614458%
D70551411.998583%

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 8530 7057 229 229 2.68% 3.25%
B 8530 7057 149 149 1.75% 2.11%
C 8530 7057 158 158 1.85% 2.24%
D 8530 7057 66 66 0.77% 0.94%

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 1850903 9963.92 752 735 185.7
A 3 45 59692 317.51 752 735 185.7
A 12 115 42983 227.52 752 735 185.7
B 2 249 1027270 6335.71 745 714 162.0
B 5 185 100321 614.76 745 714 162.0
B 1 207 50606 307.92 745 714 162.0
C 10 22 629072 3100.21 737 728 202.7
C 13 3 192391 945.65 737 728 202.7
C 1 16 114856 563.1 737 728 202.7
D 11 129 385112 1858.14 738 707 206.9
D 6 46 129691 623.48 738 707 206.9
D 2 172 89237 427.94 738 707 206.9

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