ASTROSAT CZTI

Data Quality Report

Orbit 20210108_A10_110T01_9000004104_level2

Creation date: 2025-12-18T23:31:49.335222
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/AS1A10_110T01_9000004104cztM0_level2.fits modeM0/AS1A10_110T01_9000004104cztM0_level2_quad_clean.evt
Size (bytes)657,944,640528,333,120
Size627.5 MB 503.9 MB
Events in quadrant A4,129,4563,040,453
Events in quadrant B3,929,7683,042,438
Events in quadrant C4,018,7742,885,780
Events in quadrant D3,422,7062,606,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013120
B013120
C013120
D013120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01393420
B01419750
C01385300
D01927080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A645099041.401355%
B6450911471.778046%
C6450911431.771846%
D6450949517.674898%

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 74949 64497 0 0 0.00% 0.00%
B 74949 64495 0 0 0.00% 0.00%
C 74949 64497 0 0 0.00% 0.00%
D 74948 64448 0 0 0.00% 0.00%

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 29 3906 10.94 1076 1012 264.4
A 7 110 3316 8.71 1076 1012 264.4
A 9 19 3074 7.8 1076 1012 264.4
B 2 9 3163 10.67 1039 991 203.6
B 5 128 2747 8.62 1039 991 203.6
B 2 8 2609 7.95 1039 991 203.6
C 2 191 2720 6.39 1064 998 269.6
C 9 209 2713 6.36 1064 998 269.6
C 3 126 2699 6.31 1064 998 269.6
D 15 46 2415 5.88 978 894 258.5
D 6 231 2391 5.79 978 894 258.5
D 6 67 2344 5.61 978 894 258.5

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