ASTROSAT CZTI

Data Quality Report

Orbit 22694

Creation date: 2024-06-27T18:44:29.608678
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/AS1A08_007T01_9000003362_22694cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22694cztM0_level2_quad_clean.evt
Size (bytes)2,572,320,960535,006,080
Size2.4 GB 510.2 MB
Events in quadrant A17,275,8733,481,723
Events in quadrant B18,158,6423,531,888
Events in quadrant C17,588,3793,391,621
Events in quadrant D22,406,0403,282,709

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07440
B07440
C07440
D07440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0754267
B0771377
C0758448
D0906527

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A366621470.400960%
B366622370.646446%
C366623610.984671%
D366629332.544869%

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 44386 36669 0 0 0.00% 0.00%
B 44386 36669 18 18 0.04% 0.05%
C 44386 36669 3 3 0.01% 0.01%
D 44386 36669 638 638 1.44% 1.74%

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 64224 67.44 4469 4373 887.4
A 0 226 38889 38.89 4469 4373 887.4
A 3 137 36042 35.69 4469 4373 887.4
B 0 219 222071 263.9 4451 4343 825.0
B 0 190 102440 118.9 4451 4343 825.0
B 12 111 97454 112.86 4451 4343 825.0
C 14 238 677677 673.0 4315 4342 1000.5
C 10 22 78894 74.52 4315 4342 1000.5
C 13 61 29722 25.37 4315 4342 1000.5
D 1 52 1991739 1899.38 4345 4235 1046.4
D 2 136 828224 787.45 4345 4235 1046.4
D 7 238 617975 586.53 4345 4235 1046.4

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