ASTROSAT CZTI

Data Quality Report

Orbit 36397

Creation date: 2022-06-22T08:28:35.228735
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/AS1T04_084T01_9000005198_36397cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36397cztM0_level2_quad_clean.evt
Size (bytes)480,280,32076,291,200
Size458.0 MB 72.8 MB
Events in quadrant A3,012,764485,892
Events in quadrant B4,619,142466,879
Events in quadrant C3,021,741482,329
Events in quadrant D3,488,705460,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128393
B0177002
C0125062
D0143622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932200.337154%
B59324377.366824%
C5932380.640593%
D59321392.343223%

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 7245 5933 0 0 0.00% 0.00%
B 7245 5933 343 343 4.73% 5.78%
C 7245 5933 25 25 0.35% 0.42%
D 7245 5933 119 119 1.64% 2.01%

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 10 83 194317 1418.33 679 665 136.5
A 15 223 168722 1230.87 679 665 136.5
A 2 79 11495 79.32 679 665 136.5
B 5 236 872501 6811.5 657 640 128.0
B 5 172 710422 5545.25 657 640 128.0
B 0 189 156794 1219.97 657 640 128.0
C 15 214 252403 1628.81 662 666 154.6
C 0 10 178974 1153.7 662 666 154.6
C 13 61 4486 24.72 662 666 154.6
D 12 6 288072 1783.46 658 640 161.2
D 13 171 105865 652.9 658 640 161.2
D 2 249 104809 646.35 658 640 161.2

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