ASTROSAT CZTI

Data Quality Report

Orbit 30377

Creation date: 2024-06-27T20:14:26.993850
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_003T01_9000004368_30377cztM0_level2.evt modeM0/AS1T04_003T01_9000004368_30377cztM0_level2_quad_clean.evt
Size (bytes)2,208,556,800343,313,280
Size2.1 GB 327.4 MB
Events in quadrant A13,115,6942,172,755
Events in quadrant B20,560,6252,184,317
Events in quadrant C14,859,9952,106,399
Events in quadrant D16,533,8202,079,776

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0561015
B0817365
C0606555
D0669085

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05500
B05500
C05500
D05500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269725532.050274%
B269728103.003114%
C269718713.229395%
D269716252.317304%

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 28902 26974 13 13 0.04% 0.05%
B 28902 26972 7 7 0.02% 0.03%
C 28901 26971 7 7 0.02% 0.03%
D 28901 26975 187 187 0.65% 0.69%

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 142266 207.51 3326 3244 670.0
A 0 13 80255 114.95 3326 3244 670.0
A 13 254 53185 74.54 3326 3244 670.0
B 6 159 7388420 11851.99 3284 3194 623.1
B 12 111 80067 123.37 3284 3194 623.1
B 11 111 73414 112.69 3284 3194 623.1
C 3 233 1667397 2202.34 3207 3229 755.6
C 14 238 542837 714.11 3207 3229 755.6
C 2 114 63181 79.34 3207 3229 755.6
D 8 195 2358393 2849.2 3221 3160 826.6
D 13 104 901854 1087.18 3221 3160 826.6
D 7 238 442885 531.95 3221 3160 826.6

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