ASTROSAT CZTI

Data Quality Report

Orbit 25809

Creation date: 2024-06-27T19:21:40.649181
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/AS1A07_068T01_9000003756_25809cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25809cztM0_level2_quad_clean.evt
Size (bytes)500,906,88093,542,400
Size477.7 MB 89.2 MB
Events in quadrant A4,109,437581,095
Events in quadrant B3,236,340647,763
Events in quadrant C3,128,383597,803
Events in quadrant D4,283,317581,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160020
B0133040
C0130280
D0166190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60874497.376376%
B6087570.936422%
C6087921.511418%
D60871051.724988%

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 7467 6088 403 403 5.40% 6.62%
B 7467 6087 2 2 0.03% 0.03%
C 7467 6087 0 0 0.00% 0.00%
D 7467 6088 71 71 0.95% 1.17%

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 1113451 7205.41 776 763 154.4
A 13 254 8661 51.14 776 763 154.4
A 6 16 8378 49.31 776 763 154.4
B 12 111 17778 111.59 811 793 152.2
B 0 219 16894 105.78 811 793 152.2
B 0 229 16555 103.56 811 793 152.2
C 14 238 125395 704.82 764 772 176.8
C 3 233 11433 60.29 764 772 176.8
C 0 10 11154 58.72 764 772 176.8
D 7 223 740419 4006.23 767 749 184.6
D 1 52 452131 2444.79 767 749 184.6
D 8 195 114848 617.99 767 749 184.6

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