ASTROSAT CZTI

Data Quality Report

Orbit 36780

Creation date: 2024-06-27T21:31:32.177601
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/AS1A11_087T05_9000005240_36780cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36780cztM0_level2_quad_clean.evt
Size (bytes)99,236,16017,591,040
Size94.6 MB 16.8 MB
Events in quadrant A611,986113,480
Events in quadrant B620,348115,698
Events in quadrant C616,543114,333
Events in quadrant D1,080,291106,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024591
B024861
C024421
D039671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107180.746965%
B107140.373483%
C1071100.933707%
D1071534.948646%

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 2804 1072 1 1 0.04% 0.09%
B 2804 1072 3 3 0.11% 0.28%
C 2804 1072 7 7 0.25% 0.65%
D 2804 1072 42 42 1.50% 3.92%

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 76799 2601.33 137 134 29.5
A 13 6 2986 96.77 137 134 29.5
A 10 67 2315 74.0 137 134 29.5
B 12 1 30330 1050.58 138 134 28.7
B 0 221 12202 419.87 138 134 28.7
B 4 171 11440 393.36 138 134 28.7
C 15 214 49188 1482.94 135 136 33.1
C 0 10 32779 986.86 135 136 33.1
C 14 254 4716 138.46 135 136 33.1
D 2 249 204907 5973.25 132 128 34.3
D 12 227 199901 5827.23 132 128 34.3
D 13 249 76369 2223.89 132 128 34.3

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