ASTROSAT CZTI

Data Quality Report

Orbit 06753

Creation date: 2024-06-27T15:11:17.109236
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/AS1A02_006T01_9000000934_06753cztM0_level2.evt modeM0/AS1A02_006T01_9000000934_06753cztM0_level2_quad_clean.evt
Size (bytes)485,357,76080,942,400
Size462.9 MB 77.2 MB
Events in quadrant A3,254,442494,776
Events in quadrant B4,450,811490,271
Events in quadrant C3,107,045495,748
Events in quadrant D3,409,277480,829

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144963
B0180072
C0142482
D0146214

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7021700.997009%
B70216168.773679%
C7021510.726392%
D7020560.797721%

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 7811 7022 4 4 0.05% 0.06%
B 7811 7022 305 305 3.90% 4.34%
C 7811 7022 0 0 0.00% 0.00%
D 7811 7022 3 3 0.04% 0.04%

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 13 251 57967 344.48 812 794 166.0
A 8 15 29460 172.72 812 794 166.0
A 13 248 25939 151.5 812 794 166.0
B 3 220 1265107 8277.93 790 768 152.7
B 4 81 76144 493.5 790 768 152.7
B 0 214 24270 153.87 790 768 152.7
C 13 61 6115 28.69 792 796 185.4
C 9 247 6005 28.09 792 796 185.4
C 12 16 4738 21.26 792 796 185.4
D 8 195 315023 1607.32 793 767 195.5
D 2 152 30919 154.22 793 767 195.5
D 2 16 25058 124.24 793 767 195.5

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