ASTROSAT CZTI

Data Quality Report

Orbit 36651

Creation date: 2024-06-27T21:29:45.058919
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/AS1A11_049T04_9000005230_36651cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36651cztM0_level2_quad_clean.evt
Size (bytes)429,344,64059,544,000
Size409.5 MB 56.8 MB
Events in quadrant A2,875,334369,440
Events in quadrant B2,782,329375,592
Events in quadrant C3,415,461361,501
Events in quadrant D3,576,971332,316

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114333
B0111872
C0132362
D0137392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198120.230858%
B5198150.288573%
C51981793.443632%
D51982544.886495%

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 7231 5199 0 0 0.00% 0.00%
B 7231 5199 4 4 0.06% 0.08%
C 7231 5199 123 123 1.70% 2.37%
D 7231 5199 194 194 2.68% 3.73%

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 202574 1478.02 684 673 136.6
A 7 192 15146 105.95 684 673 136.6
A 13 6 8865 59.97 684 673 136.6
B 0 190 28833 221.34 680 664 127.3
B 0 221 28306 217.2 680 664 127.3
B 5 255 23745 181.36 680 664 127.3
C 0 10 353104 2346.7 653 658 150.2
C 14 254 279302 1855.3 653 658 150.2
C 15 214 222549 1477.42 653 658 150.2
D 12 6 379178 2392.82 649 633 158.2
D 2 249 290074 1829.59 649 633 158.2
D 2 153 158800 999.79 649 633 158.2

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