ASTROSAT CZTI

Data Quality Report

Orbit 17642

Creation date: 2024-06-27T17:39:00.452098
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/AS1A05_118T02_9000002612_17642cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17642cztM0_level2_quad_clean.evt
Size (bytes)568,532,16099,705,600
Size542.2 MB 95.1 MB
Events in quadrant A3,165,295658,330
Events in quadrant B3,320,411677,359
Events in quadrant C3,354,436639,543
Events in quadrant D6,927,318580,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137322
B0140852
C0141622
D0252792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660360.540541%
B6660540.810811%
C6660650.975976%
D666076511.486486%

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 7865 6662 0 0 0.00% 0.00%
B 7865 6662 2 2 0.03% 0.03%
C 7865 6662 0 0 0.00% 0.00%
D 7865 6662 710 710 9.03% 10.66%

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 0 226 7306 39.07 823 805 166.4
A 3 137 6008 31.27 823 805 166.4
A 12 194 5908 30.67 823 805 166.4
B 0 230 44345 278.89 826 808 156.1
B 12 111 18509 113.39 826 808 156.1
B 10 246 16198 98.59 826 808 156.1
C 3 233 131952 714.1 789 795 183.7
C 14 238 124164 671.69 789 795 183.7
C 5 218 21506 112.76 789 795 183.7
D 1 52 3913228 21132.24 758 734 185.1
D 13 189 116731 626.53 758 734 185.1
D 2 234 21871 114.17 758 734 185.1

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