ASTROSAT CZTI

Data Quality Report

Orbit 55697

Creation date: 2026-01-15T13:02:18.221174
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_099T04_9000006540_55697cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55697cztM0_level2_quad_clean.evt
Size (bytes)518,915,520111,775,680
Size494.9 MB 106.6 MB
Events in quadrant A4,564,362707,060
Events in quadrant B3,546,563787,482
Events in quadrant C3,841,224707,586
Events in quadrant D6,641,722632,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192830
B0167450
C0176430
D0253924

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79113254.108204%
B7912821.036400%
C7912911.150152%
D79115817.344204%

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 7911 7911 78 78 0.99% 0.99%
B 7912 7912 2 2 0.03% 0.03%
C 7912 7912 68 68 0.86% 0.86%
D 7911 7911 567 567 7.17% 7.17%

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 15 32 999035 4924.45 829 808 202.7
A 8 249 106687 522.32 829 808 202.7
A 5 241 93095 455.27 829 808 202.7
B 0 199 71457 391.04 834 803 180.7
B 4 190 41787 226.83 834 803 180.7
B 2 249 40404 219.17 834 803 180.7
C 13 3 192633 854.64 815 805 224.5
C 6 223 153758 681.44 815 805 224.5
C 12 250 96507 426.37 815 805 224.5
D 11 129 3175382 13999.88 799 761 226.8
D 8 245 171882 754.63 799 761 226.8
D 7 129 124590 546.08 799 761 226.8

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