ASTROSAT CZTI

Data Quality Report

Orbit 25800

Creation date: 2024-06-27T19:21:35.137795
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_068T01_9000003756_25800cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25800cztM0_level2_quad_clean.evt
Size (bytes)512,251,20078,716,160
Size488.5 MB 75.1 MB
Events in quadrant A4,815,349469,487
Events in quadrant B3,385,679488,810
Events in quadrant C3,370,673464,600
Events in quadrant D3,459,573465,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189250
B0145340
C0145200
D0148970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71053084.334975%
B7105520.731879%
C7106781.097664%
D7106360.506614%

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 7105 240 240 3.19% 3.38%
B 7525 7105 0 0 0.00% 0.00%
C 7526 7106 0 0 0.00% 0.00%
D 7526 7106 7 7 0.09% 0.10%

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 0 13 1556447 9141.9 840 822 170.2
A 11 29 16319 91.07 840 822 170.2
A 13 254 9223 49.37 840 822 170.2
B 12 111 20471 120.35 847 827 163.2
B 0 190 20026 117.62 847 827 163.2
B 11 111 18380 107.54 847 827 163.2
C 14 238 131780 682.9 813 817 191.8
C 3 233 70966 365.79 813 817 191.8
C 13 61 5570 24.78 813 817 191.8
D 8 195 126167 637.31 820 800 196.7
D 13 104 119119 601.48 820 800 196.7
D 1 52 69117 347.29 820 800 196.7

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