ASTROSAT CZTI

Data Quality Report

Orbit 25717

Creation date: 2024-06-27T19:20:44.425896
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_008T06_9000003748_25717cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25717cztM0_level2_quad_clean.evt
Size (bytes)515,433,60067,037,760
Size491.6 MB 63.9 MB
Events in quadrant A3,396,943399,931
Events in quadrant B3,587,679405,063
Events in quadrant C3,456,350384,375
Events in quadrant D4,716,634375,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143610
B0148780
C0144220
D0183960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6661580.870740%
B6661981.471251%
C66601081.621622%
D66602794.189189%

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 7721 6661 0 0 0.00% 0.00%
B 7721 6661 22 22 0.28% 0.33%
C 7720 6660 0 0 0.00% 0.00%
D 7720 6660 198 198 2.56% 2.97%

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 19799 107.96 875 857 175.4
A 13 254 10942 57.48 875 857 175.4
A 3 137 7657 38.76 875 857 175.4
B 5 172 76692 464.67 865 845 163.2
B 0 190 37519 224.68 865 845 163.2
B 0 219 32288 192.63 865 845 163.2
C 14 238 133079 674.99 833 838 195.9
C 3 233 69628 351.12 833 838 195.9
C 13 61 5767 25.16 833 838 195.9
D 1 52 1029449 5044.01 841 819 203.9
D 8 195 205004 1001.24 841 819 203.9
D 2 244 82828 402.14 841 819 203.9

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