ASTROSAT CZTI

Data Quality Report

Orbit 26331

Creation date: 2024-06-27T19:27:33.952551
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/AS1A09_008T02_9000003796_26331cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26331cztM0_level2_quad_clean.evt
Size (bytes)594,204,480118,134,720
Size566.7 MB 112.7 MB
Events in quadrant A3,121,151806,174
Events in quadrant B3,231,504831,438
Events in quadrant C4,867,619785,238
Events in quadrant D6,343,595710,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131760
B0134060
C0183980
D0231170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6370120.188383%
B6369590.926362%
C636963910.032972%
D6369100215.732454%

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 7610 6372 0 0 0.00% 0.00%
B 7609 6371 1 1 0.01% 0.02%
C 7609 6371 332 332 4.36% 5.21%
D 7608 6370 659 659 8.66% 10.35%

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 8865 50.36 808 791 160.3
A 3 137 7186 39.88 808 791 160.3
A 0 226 6746 37.14 808 791 160.3
B 0 219 33039 213.53 811 790 151.0
B 12 111 17964 113.71 811 790 151.0
B 11 111 15934 100.27 811 790 151.0
C 3 233 1724954 9627.67 773 777 179.1
C 14 238 123651 686.12 773 777 179.1
C 2 16 10727 55.56 773 777 179.1
D 1 52 3207902 18707.31 730 712 171.4
D 12 227 356627 2076.03 730 712 171.4
D 2 234 25830 146.51 730 712 171.4

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