ASTROSAT CZTI

Data Quality Report

Orbit 35220

Creation date: 2022-04-03T20:28:42.728401
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/AS1C07_004T01_9000005052_35220cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35220cztM0_level2_quad_clean.evt
Size (bytes)760,881,60085,659,840
Size725.6 MB 81.7 MB
Events in quadrant A2,667,449628,847
Events in quadrant B9,088,078455,550
Events in quadrant C3,119,134612,337
Events in quadrant D7,815,279528,402

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111433
B0306082
C0124462
D0269062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A524870.133384%
B5248274152.229421%
C52481011.924543%
D5248132525.247713%

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 7371 5249 0 0 0.00% 0.00%
B 7371 5248 2039 2039 27.66% 38.85%
C 7371 5249 69 69 0.94% 1.31%
D 7370 5248 1302 1302 17.67% 24.81%

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 101371 763.56 652 639 131.9
A 13 6 23881 176.18 652 639 131.9
A 9 143 10877 77.61 652 639 131.9
B 5 236 6073253 64156.37 498 488 94.7
B 5 172 860738 9088.2 498 488 94.7
B 4 232 87954 924.04 498 488 94.7
C 0 10 266771 1880.88 614 621 141.5
C 15 214 223135 1572.5 614 621 141.5
C 9 187 108744 764.1 614 621 141.5
D 8 195 3173746 22539.97 584 569 140.8
D 2 250 1276886 9066.04 584 569 140.8
D 1 47 338308 2399.05 584 569 140.8

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