ASTROSAT CZTI

Data Quality Report

Orbit 29852

Creation date: 2024-06-27T20:08:20.684444
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_29852cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29852cztM0_level2_quad_clean.evt
Size (bytes)716,218,560112,204,800
Size683.0 MB 107.0 MB
Events in quadrant A4,099,268732,145
Events in quadrant B6,448,900732,464
Events in quadrant C5,365,624691,367
Events in quadrant D5,227,657677,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174513
B0250153
C0215633
D0208863

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81221061.305097%
B81232833.483935%
C81232913.582420%
D81231311.612705%

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 8592 8123 15 15 0.17% 0.18%
B 8593 8124 0 0 0.00% 0.00%
C 8593 8124 4 4 0.05% 0.05%
D 8593 8124 55 55 0.64% 0.68%

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 0 13 145306 702.19 1018 997 205.5
A 15 174 23809 111.0 1018 997 205.5
A 13 254 16296 74.44 1018 997 205.5
B 6 159 2382679 12331.65 1010 985 193.1
B 0 190 74197 379.07 1010 985 193.1
B 12 111 24321 120.83 1010 985 193.1
C 3 233 1354908 6004.89 969 973 225.5
C 14 238 173622 765.72 969 973 225.5
C 14 254 25140 107.18 969 973 225.5
D 8 195 1258638 5386.93 977 951 233.5
D 2 250 78362 331.57 977 951 233.5
D 7 80 74910 316.78 977 951 233.5

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