ASTROSAT CZTI

Data Quality Report

Orbit 29847

Creation date: 2024-06-27T20:08:16.686006
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/AS1T03_291T01_9000004278_29847cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29847cztM0_level2_quad_clean.evt
Size (bytes)590,270,40074,568,960
Size562.9 MB 71.1 MB
Events in quadrant A3,731,900475,294
Events in quadrant B5,514,079470,221
Events in quadrant C4,065,065436,080
Events in quadrant D4,136,286433,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153302
B0203052
C0166272
D0166432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63411241.955528%
B63422043.216651%
C63422203.468937%
D63421822.869757%

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 7661 6342 1 1 0.01% 0.02%
B 7662 6343 6 6 0.08% 0.09%
C 7662 6343 13 13 0.17% 0.20%
D 7662 6343 78 78 1.02% 1.23%

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 12 96 32611 172.28 949 936 183.9
A 15 174 17334 89.19 949 936 183.9
A 14 238 15936 81.59 949 936 183.9
B 6 159 1804720 10578.39 931 914 170.5
B 0 190 47114 270.94 931 914 170.5
B 12 111 19155 106.97 931 914 170.5
C 3 233 380328 1910.24 875 883 198.6
C 14 238 146619 733.68 875 883 198.6
C 10 22 108232 540.43 875 883 198.6
D 8 195 225615 1093.1 892 871 205.6
D 2 250 223442 1082.53 892 871 205.6
D 7 80 121187 585.19 892 871 205.6

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