ASTROSAT CZTI

Data Quality Report

Orbit 20241208_A13_037T01_9000006440_level2

Creation date: 2025-02-10T15:19:21.762755
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/AS1A13_037T01_9000006440cztM0_level2.fits modeM0/AS1A13_037T01_9000006440cztM0_level2_quad_clean.evt
Size (bytes)1,890,446,4002,231,320,320
Size1.8 GB 2.1 GB
Events in quadrant A10,975,43013,601,522
Events in quadrant B16,407,87828,567,573
Events in quadrant C2,406,994835,639
Events in quadrant D3,218,688738,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07310
B07310
C07310
D07320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070600
B070600
C070600
D070600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020418150
B08837810
C021066180
D025008470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34770917759251.074893%
B347711143974.140507%
C34771133648196.770306%
D34771133683996.873265%

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 400887 335089 0 0 0.00% 0.00%
B 400888 347506 0 0 0.00% 0.00%
C 400884 210329 0 0 0.00% 0.00%
D 400888 286992 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 9 255 11678 9.87 2976 2768 902.8
A 14 188 11377 9.54 2976 2768 902.8
A 14 95 9527 7.49 2976 2768 902.8
B 2 9 17816 13.64 4379 4151 1002.1
B 2 8 16207 12.03 4379 4151 1002.1
B 2 245 13558 9.39 4379 4151 1002.1
C 7 221 1975 6.31 667 610 216.2
C 2 31 1959 6.24 667 610 216.2
C 7 245 1920 6.06 667 610 216.2
D 6 218 4670 12.56 952 844 304.6
D 3 30 3317 8.12 952 844 304.6
D 14 31 2929 6.84 952 844 304.6

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