ASTROSAT CZTI

Data Quality Report

Orbit 55088

Creation date: 2025-12-03T19:37:05.051950
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_55088cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55088cztM0_level2_quad_clean.evt
Size (bytes)436,224,960107,386,560
Size416.0 MB 102.4 MB
Events in quadrant A3,379,126701,870
Events in quadrant B3,400,623756,872
Events in quadrant C4,408,110660,566
Events in quadrant D4,375,527609,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016361689
B016250688
C019494877
D019182891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01588
B01588
C01586
D01586

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7516260.345929%
B751060.079893%
C74991101.466862%
D75062152.864375%

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 7717 7575 23 23 0.30% 0.30%
B 7746 7590 4 4 0.05% 0.05%
C 7669 7570 111 111 1.45% 1.47%
D 7734 7575 235 235 3.04% 3.10%

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 120711 600.67 808 788 199.6
A 3 61 63706 315.14 808 788 199.6
A 4 3 33038 161.53 808 788 199.6
B 7 0 112566 651.5 796 766 171.6
B 5 185 78888 455.24 796 766 171.6
B 10 247 27608 156.42 796 766 171.6
C 9 38 863963 4068.55 780 774 212.2
C 14 254 164548 771.93 780 774 212.2
C 6 223 106792 499.7 780 774 212.2
D 15 94 401706 1839.01 774 741 218.0
D 9 1 140851 642.61 774 741 218.0
D 2 31 123986 565.26 774 741 218.0

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