ASTROSAT CZTI

Data Quality Report

Orbit 19328

Creation date: 2024-06-27T18:01:27.680689
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_204T01_9000002856_19328cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19328cztM0_level2_quad_clean.evt
Size (bytes)620,176,320107,136,000
Size591.4 MB 102.2 MB
Events in quadrant A3,586,963702,442
Events in quadrant B3,652,932706,736
Events in quadrant C3,920,085678,166
Events in quadrant D7,103,921625,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158214
B0159604
C0167204
D0263346

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7636460.602410%
B7637931.217756%
C76371501.964122%
D7636126716.592457%

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 8206 7639 3 3 0.04% 0.04%
B 8207 7640 2 2 0.02% 0.03%
C 8207 7639 1 1 0.01% 0.01%
D 8205 7638 1191 1191 14.52% 15.59%

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 5 16 25347 131.7 915 895 185.7
A 11 29 18757 96.21 915 895 185.7
A 4 2 12848 64.38 915 895 185.7
B 0 190 22371 124.21 910 886 173.0
B 12 111 21422 118.73 910 886 173.0
B 11 111 18694 102.96 910 886 173.0
C 3 233 340802 1627.91 883 887 208.8
C 14 238 136341 648.71 883 887 208.8
C 13 61 6250 25.68 883 887 208.8
D 7 238 3828125 19367.36 817 792 197.6
D 13 104 51882 258.53 817 792 197.6
D 11 176 33013 163.05 817 792 197.6

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