ASTROSAT CZTI

Data Quality Report

Orbit 20190629_A05_174T01_9000003008_level2

Creation date: 2025-12-01T19:52:15.735337
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/AS1A05_174T01_9000003008cztM0_level2.fits modeM0/AS1A05_174T01_9000003008cztM0_level2_quad_clean.evt
Size (bytes)2,627,187,8402,330,801,280
Size2.4 GB 2.2 GB
Events in quadrant A16,078,44213,658,247
Events in quadrant B15,443,64013,752,054
Events in quadrant C15,913,22812,988,837
Events in quadrant D13,695,54011,763,152

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04510
C04510
D04510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05765400
B06045710
C06162760
D07006810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055220
B055260
C055280
D055240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26888247041.749466%
B26891076452.842959%
C26889071532.660196%
D268881136445.074364%

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 328867 268956 0 0 0.00% 0.00%
B 328867 268981 0 0 0.00% 0.00%
C 328867 268982 0 0 0.00% 0.00%
D 328867 268397 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 15686 11.51 4191 3928 1021.3
A 7 110 12835 8.72 4191 3928 1021.3
A 9 19 12142 8.04 4191 3928 1021.3
B 3 17 10218 8.07 4078 3885 784.6
B 5 128 10136 7.97 4078 3885 784.6
B 5 225 9977 7.76 4078 3885 784.6
C 1 81 12340 7.88 4200 3927 1068.3
C 1 80 12255 7.8 4200 3927 1068.3
C 12 241 11056 6.67 4200 3927 1068.3
D 3 14 9915 6.12 3920 3572 1036.6
D 6 231 9707 5.92 3920 3572 1036.6
D 7 3 9671 5.88 3920 3572 1036.6

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