ASTROSAT CZTI

Data Quality Report

Orbit 31018

Creation date: 2024-06-27T20:22:19.969133
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/AS1A10_071T52_9000004480_31018cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31018cztM0_level2_quad_clean.evt
Size (bytes)590,169,60095,290,560
Size562.8 MB 90.9 MB
Events in quadrant A3,232,298641,554
Events in quadrant B5,257,489641,851
Events in quadrant C3,722,690590,249
Events in quadrant D5,235,944573,431

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136312
B0198552
C0151022
D0198472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275550.876494%
B62751342.135458%
C62742383.793433%
D62743755.977048%

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 7530 6275 0 0 0.00% 0.00%
B 7530 6275 4 4 0.05% 0.06%
C 7529 6274 111 111 1.47% 1.77%
D 7529 6274 329 329 4.37% 5.24%

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 12375 70.16 837 821 164.7
A 3 137 7935 43.2 837 821 164.7
A 0 226 7320 39.47 837 821 164.7
B 6 159 1834471 11749.87 827 808 156.1
B 0 155 69409 439.59 827 808 156.1
B 0 190 32903 205.66 827 808 156.1
C 0 10 498425 2709.64 783 791 183.7
C 14 238 126937 686.87 783 791 183.7
C 4 175 20782 108.85 783 791 183.7
D 13 174 1377288 7297.57 792 772 188.6
D 8 195 700685 3710.57 792 772 188.6
D 2 250 94021 494.36 792 772 188.6

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