ASTROSAT CZTI

Data Quality Report

Orbit 20210624_A10_071T63_9000004486_level2

Creation date: 2025-12-27T06:39:08.950558
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_071T63_9000004486cztM0_level2.fits modeM0/AS1A10_071T63_9000004486cztM0_level2_quad_clean.evt
Size (bytes)679,898,880526,282,560
Size648.4 MB 501.9 MB
Events in quadrant A4,274,7922,982,741
Events in quadrant B3,979,9942,919,715
Events in quadrant C4,084,5722,790,221
Events in quadrant D3,576,7562,570,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013920
B013920
C013920
D013920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01424610
B02138340
C01463930
D01779110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A681429871.448446%
B6814221893.212409%
C6814216682.447830%
D6814220903.067125%

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 79036 68129 0 0 0.00% 0.00%
B 79036 68124 0 0 0.00% 0.00%
C 79036 68126 0 0 0.00% 0.00%
D 79036 68105 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 4131 11.37 1112 1044 271.5
A 7 110 3360 8.53 1112 1044 271.5
A 9 19 3281 8.24 1112 1044 271.5
B 2 9 3184 10.45 1052 1002 208.8
B 5 255 2691 8.09 1052 1002 208.8
B 3 17 2687 8.07 1052 1002 208.8
C 9 233 2804 6.5 1081 1009 275.9
C 3 126 2783 6.43 1081 1009 275.9
C 9 209 2780 6.42 1081 1009 275.9
D 15 46 2697 6.44 1022 928 274.4
D 3 14 2599 6.09 1022 928 274.4
D 10 189 2524 5.81 1022 928 274.4

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