ASTROSAT CZTI

Data Quality Report

Orbit 21793

Creation date: 2024-06-27T18:32:16.803910
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_006T01_9000003226_21793cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21793cztM0_level2_quad_clean.evt
Size (bytes)563,690,88076,976,640
Size537.6 MB 73.4 MB
Events in quadrant A2,881,100510,223
Events in quadrant B3,018,882515,428
Events in quadrant C2,782,982499,911
Events in quadrant D7,982,434386,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126441
B0128061
C0122381
D0277391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5981280.468149%
B5982440.735540%
C5982460.768974%
D5982195632.698094%

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 6886 5982 0 0 0.00% 0.00%
B 6887 5983 15 15 0.22% 0.25%
C 6887 5983 0 0 0.00% 0.00%
D 6887 5983 1759 1759 25.54% 29.40%

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 14 235 67160 450.59 722 707 147.5
A 13 252 28239 186.68 722 707 147.5
A 13 254 11626 74.04 722 707 147.5
B 3 64 70702 502.65 718 701 139.3
B 0 190 46795 330.98 718 701 139.3
B 0 228 30045 210.71 718 701 139.3
C 14 238 106959 653.06 686 688 162.7
C 13 61 4972 26.33 686 688 162.7
C 14 111 1605 5.64 686 688 162.7
D 7 238 5281893 34517.86 622 604 153.0
D 7 38 113573 738.35 622 604 153.0
D 13 153 112383 730.57 622 604 153.0

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