ASTROSAT CZTI

Data Quality Report

Orbit 29830

Creation date: 2024-06-27T20:08:06.837073
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_29830cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29830cztM0_level2_quad_clean.evt
Size (bytes)2,224,779,840353,672,640
Size2.1 GB 337.3 MB
Events in quadrant A13,157,7832,279,263
Events in quadrant B21,150,6732,278,635
Events in quadrant C13,722,8492,176,324
Events in quadrant D17,517,2812,109,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564155
B0826045
C0577095
D0695419

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271582200.810074%
B271594221.553813%
C271595111.881513%
D271587262.673245%

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 31223 27163 7 7 0.02% 0.03%
B 31224 27164 13 13 0.04% 0.05%
C 31224 27164 50 50 0.16% 0.18%
D 31223 27163 455 455 1.46% 1.68%

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 115453 167.84 3371 3300 668.2
A 13 254 50331 70.38 3371 3300 668.2
A 3 137 33121 44.63 3371 3300 668.2
B 6 159 7722321 12344.74 3319 3240 625.3
B 15 33 210154 330.91 3319 3240 625.3
B 5 255 94638 146.17 3319 3240 625.3
C 14 238 535855 715.02 3216 3239 744.9
C 10 22 491342 655.26 3216 3239 744.9
C 3 233 93779 121.55 3216 3239 744.9
D 7 80 2157696 2828.39 3234 3147 761.8
D 8 195 1564719 2049.96 3234 3147 761.8
D 13 189 677486 885.24 3234 3147 761.8

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