ASTROSAT CZTI

Data Quality Report

Orbit 37268

Creation date: 2024-06-27T21:37:40.491316
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/AS1A10_103T03_9000005296_37268cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37268cztM0_level2_quad_clean.evt
Size (bytes)81,705,60018,316,800
Size77.9 MB 17.5 MB
Events in quadrant A593,149118,855
Events in quadrant B623,938121,024
Events in quadrant C568,699121,407
Events in quadrant D616,897115,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024412
B025591
C023431
D025871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1010403.960396%
B1010121.188119%
C1010282.772277%
D1010414.059406%

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 1010 1010 38 38 3.76% 3.76%
B 1010 1010 5 5 0.50% 0.50%
C 1010 1010 23 23 2.28% 2.28%
D 1010 1010 43 43 4.26% 4.26%

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 85402 3618.09 106 104 23.6
A 15 237 60577 2565.08 106 104 23.6
A 13 248 22352 943.69 106 104 23.6
B 0 213 115323 5037.6 108 105 22.9
B 5 173 47596 2076.42 108 105 22.9
B 0 190 9230 398.97 108 105 22.9
C 0 10 85410 3206.79 105 106 26.6
C 15 214 46193 1732.53 105 106 26.6
C 14 254 24597 920.68 105 106 26.6
D 12 218 93010 3465.71 102 99 26.8
D 2 153 70705 2633.7 102 99 26.8
D 13 249 21254 789.11 102 99 26.8

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