ASTROSAT CZTI

Data Quality Report

Orbit 33910

Creation date: 2024-06-27T20:54:04.743052
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/AS1T04_091T01_9000004842_33910cztM0_level2.evt modeM0/AS1T04_091T01_9000004842_33910cztM0_level2_quad_clean.evt
Size (bytes)683,962,56095,397,120
Size652.3 MB 91.0 MB
Events in quadrant A5,191,241582,883
Events in quadrant B4,521,646607,734
Events in quadrant C4,051,676608,053
Events in quadrant D6,442,427568,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01522
B01520
C01520
D01524

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0141
C0140
D0141

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02036947
B01866468
C01671025
D02432383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74994235.640752%
B74983714.947986%
C7507610.812575%
D74944495.991460%

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 8892 7520 419 419 4.71% 5.57%
B 8892 7519 197 197 2.22% 2.62%
C 8892 7520 39 39 0.44% 0.52%
D 8892 7519 259 259 2.91% 3.44%

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 15 169 1780245 10526.62 843 824 169.0
A 7 16 136830 804.58 843 824 169.0
A 13 254 12660 70.02 843 824 169.0
B 5 172 1064793 6665.79 830 808 159.6
B 4 170 24408 147.85 830 808 159.6
B 0 219 24333 147.38 830 808 159.6
C 15 214 322630 1682.99 825 830 191.2
C 0 207 225119 1173.01 825 830 191.2
C 0 10 208097 1083.99 825 830 191.2
D 8 195 1481454 7433.78 815 792 199.2
D 1 52 1035444 5194.55 815 792 199.2
D 13 249 439848 2204.32 815 792 199.2

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