ASTROSAT CZTI

Data Quality Report

Orbit 11654

Creation date: 2024-06-27T16:16:30.500485
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/AS1A04_037T01_9000001716_11654cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11654cztM0_level2_quad_clean.evt
Size (bytes)803,790,72080,824,320
Size766.6 MB 77.1 MB
Events in quadrant A7,381,819481,185
Events in quadrant B3,848,149516,173
Events in quadrant C3,526,858508,529
Events in quadrant D9,100,999440,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269143
B0159302
C0153212
D0319262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7192113615.795328%
B71923805.283648%
C71922663.698554%
D7192163822.775306%

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 8918 7195 532 532 5.97% 7.39%
B 8918 7195 12 12 0.13% 0.17%
C 8918 7195 0 0 0.00% 0.00%
D 8918 7195 1164 1164 13.05% 16.18%

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 8 5 3450076 19070.68 881 859 180.9
A 1 162 198569 1093.14 881 859 180.9
A 1 178 115869 635.89 881 859 180.9
B 4 239 191469 1068.72 912 889 178.3
B 15 204 51317 282.79 912 889 178.3
B 3 209 34154 186.54 912 889 178.3
C 8 128 8526 36.45 900 904 209.1
C 13 61 6494 26.73 900 904 209.1
C 8 112 4583 17.59 900 904 209.1
D 13 104 3617669 17746.52 844 818 203.8
D 1 52 1253886 6148.33 844 818 203.8
D 8 195 341841 1673.27 844 818 203.8

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