ASTROSAT CZTI

Data Quality Report

Orbit 19251

Creation date: 2024-06-27T18:00:39.877341
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/AS1A05_115T01_9000002848_19251cztM0_level2.evt modeM0/AS1A05_115T01_9000002848_19251cztM0_level2_quad_clean.evt
Size (bytes)536,414,400115,701,120
Size511.6 MB 110.3 MB
Events in quadrant A3,462,392771,153
Events in quadrant B3,477,345792,841
Events in quadrant C3,809,679766,979
Events in quadrant D5,053,387718,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144162
B0144362
C0154602
D0193533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65181121.718319%
B65191432.193588%
C65192263.466789%
D65185929.082541%

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 9188 6519 0 0 0.00% 0.00%
B 9189 6521 0 0 0.00% 0.00%
C 9189 6520 0 0 0.00% 0.00%
D 9188 6519 437 437 4.76% 6.70%

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 13 254 8019 40.01 895 878 178.5
A 0 226 7821 38.9 895 878 178.5
A 3 137 6696 32.6 895 878 178.5
B 12 111 19861 113.89 889 869 166.8
B 11 111 17689 100.86 889 869 166.8
B 14 111 16047 91.02 889 869 166.8
C 3 233 244294 1211.72 875 885 200.9
C 14 238 136930 677.25 875 885 200.9
C 5 112 15475 72.63 875 885 200.9
D 1 52 1037652 5056.87 861 841 205.0
D 7 238 728468 3548.88 861 841 205.0
D 2 234 22901 107.59 861 841 205.0

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