ASTROSAT CZTI

Data Quality Report

Orbit 11961

Creation date: 2024-06-27T16:20:36.536016
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/AS1A04_124T01_9000001766_11961cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11961cztM0_level2_quad_clean.evt
Size (bytes)502,634,880128,188,800
Size479.3 MB 122.3 MB
Events in quadrant A3,643,874854,020
Events in quadrant B4,284,085858,060
Events in quadrant C3,091,361850,292
Events in quadrant D3,711,312816,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156072
B0175061
C0147041
D0159741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72421161.601767%
B72422883.976802%
C7242400.552334%
D7242931.284176%

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 7533 7243 2 2 0.03% 0.03%
B 7533 7243 151 151 2.00% 2.08%
C 7533 7244 1 1 0.01% 0.01%
D 7533 7243 24 24 0.32% 0.33%

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 1 162 121957 727.32 816 797 166.6
A 6 254 104099 620.12 816 797 166.6
A 1 178 64584 382.91 816 797 166.6
B 4 239 691595 4422.14 813 791 156.2
B 3 64 136328 867.63 813 791 156.2
B 15 204 133505 849.56 813 791 156.2
C 14 234 10165 51.49 789 790 182.1
C 13 61 5974 28.47 789 790 182.1
C 0 207 3607 15.47 789 790 182.1
D 8 195 300396 1472.66 779 760 203.5
D 13 104 100282 489.13 779 760 203.5
D 13 122 71693 348.62 779 760 203.5

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