ASTROSAT CZTI

Data Quality Report

Orbit 30874

Creation date: 2024-06-27T20:20:37.656956
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_071T49_9000004462_30874cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30874cztM0_level2_quad_clean.evt
Size (bytes)646,611,84090,040,320
Size616.7 MB 85.9 MB
Events in quadrant A3,288,444596,985
Events in quadrant B7,105,563595,926
Events in quadrant C3,487,892561,550
Events in quadrant D5,277,337533,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134782
B0258062
C0141522
D0200072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275230.366534%
B62752584.111554%
C6275951.513944%
D62754126.565737%

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 7570 6276 0 0 0.00% 0.00%
B 7570 6276 67 67 0.89% 1.07%
C 7570 6276 21 21 0.28% 0.33%
D 7570 6276 469 469 6.20% 7.47%

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 11736 64.59 850 835 168.8
A 3 137 8243 43.89 850 835 168.8
A 12 96 7338 38.53 850 835 168.8
B 6 159 1818461 11555.88 843 824 157.3
B 6 36 1698166 10791.09 843 824 157.3
B 4 80 107109 675.72 843 824 157.3
C 14 238 132012 697.67 806 814 188.1
C 0 10 74255 390.54 806 814 188.1
C 3 233 63943 335.7 806 814 188.1
D 12 233 1364588 7360.26 786 770 185.3
D 8 195 528062 2845.69 786 770 185.3
D 1 52 262098 1410.34 786 770 185.3

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