ASTROSAT CZTI

Data Quality Report

Orbit 26750

Creation date: 2024-06-27T19:32:25.348401
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/AS1T03_223T01_9000003850_26750cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26750cztM0_level2_quad_clean.evt
Size (bytes)3,201,232,320317,831,040
Size3.0 GB 303.1 MB
Events in quadrant A13,375,3042,174,141
Events in quadrant B43,611,1921,713,272
Events in quadrant C12,982,9562,108,757
Events in quadrant D25,292,2281,895,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548960
B01467250
C0535600
D0924600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251612120.842574%
B251601378654.793323%
C251603651.450715%
D25161338913.469258%

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 31361 25166 7 7 0.02% 0.03%
B 31359 25163 10887 10887 34.72% 43.27%
C 31360 25165 16 16 0.05% 0.06%
D 31361 25166 2621 2621 8.36% 10.41%

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 442504 672.93 3303 3245 652.8
A 11 29 174243 261.96 3303 3245 652.8
A 13 254 39679 55.82 3303 3245 652.8
B 0 189 33493792 71835.5 2536 2483 466.2
B 10 246 103054 215.71 2536 2483 466.2
B 3 112 59669 122.66 2536 2483 466.2
C 14 238 508719 705.88 3116 3141 716.2
C 2 16 161906 221.67 3116 3141 716.2
C 15 208 117839 160.14 3116 3141 716.2
D 7 80 9259621 12393.02 2990 2912 746.9
D 1 52 3608591 4827.34 2990 2912 746.9
D 2 250 451615 600.73 2990 2912 746.9

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