ASTROSAT CZTI

Data Quality Report

Orbit 23972

Creation date: 2024-06-27T19:00:39.127751
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_001T04_9000003552_23972cztM0_level2.evt modeM0/AS1A07_001T04_9000003552_23972cztM0_level2_quad_clean.evt
Size (bytes)566,945,280124,646,400
Size540.7 MB 118.9 MB
Events in quadrant A3,103,139910,330
Events in quadrant B3,431,923909,105
Events in quadrant C3,253,890851,624
Events in quadrant D6,944,499654,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133372
B0143952
C0137942
D0248415

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420520.809969%
B64211081.681981%
C64211422.211494%
D6420194630.311526%

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 7525 6421 0 0 0.00% 0.00%
B 7526 6422 28 28 0.37% 0.44%
C 7526 6422 36 36 0.48% 0.56%
D 7525 6421 1116 1116 14.83% 17.38%

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 13 254 11624 67.32 804 789 160.9
A 0 226 7310 40.52 804 789 160.9
A 3 137 6658 36.47 804 789 160.9
B 0 197 165289 1122.32 792 771 146.6
B 4 200 115846 785.03 792 771 146.6
B 0 245 25979 171.97 792 771 146.6
C 0 10 177153 1033.33 746 750 170.7
C 14 238 122802 714.96 746 750 170.7
C 7 221 19398 109.24 746 750 170.7
D 12 218 4152818 27610.34 609 590 150.4
D 12 250 133429 883.32 609 590 150.4
D 1 52 115312 762.85 609 590 150.4

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