ASTROSAT CZTI

Data Quality Report

Orbit 20320

Creation date: 2024-06-27T18:13:50.406252
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_174T01_9000003008_20320cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20320cztM0_level2_quad_clean.evt
Size (bytes)479,891,520108,835,200
Size457.7 MB 103.8 MB
Events in quadrant A3,169,799714,578
Events in quadrant B3,490,221739,153
Events in quadrant C3,262,374713,123
Events in quadrant D4,185,422691,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134162
B0144192
C0135602
D0165472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6268230.366943%
B62681201.914486%
C6268761.212508%
D62682864.562859%

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 7498 6269 0 0 0.00% 0.00%
B 7498 6269 38 38 0.51% 0.61%
C 7498 6269 0 0 0.00% 0.00%
D 7498 6269 210 210 2.80% 3.35%

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 14 238 50454 307.17 804 790 161.7
A 11 29 13649 79.53 804 790 161.7
A 13 254 10205 58.23 804 790 161.7
B 7 220 136519 889.73 808 786 152.6
B 4 142 83791 544.1 808 786 152.6
B 0 197 37845 242.92 808 786 152.6
C 14 238 124624 674.43 792 801 183.6
C 3 9 31279 166.01 792 801 183.6
C 0 207 11415 57.81 792 801 183.6
D 1 52 733942 3869.08 787 766 189.5
D 9 1 401005 2112.12 787 766 189.5
D 2 184 65592 342.1 787 766 189.5

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