ASTROSAT CZTI

Data Quality Report

Orbit 19520

Creation date: 2024-06-27T18:03:43.517357
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/AS1A05_175T01_9000002894_19520cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19520cztM0_level2_quad_clean.evt
Size (bytes)841,008,96092,246,400
Size802.0 MB 88.0 MB
Events in quadrant A3,370,474660,508
Events in quadrant B3,471,344664,481
Events in quadrant C3,564,714633,800
Events in quadrant D14,568,863323,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149461
B0151341
C0152691
D0483081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7314390.533224%
B7315400.546822%
C7315911.244019%
D7315440660.232399%

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 7709 7315 0 0 0.00% 0.00%
B 7710 7316 0 0 0.00% 0.00%
C 7710 7316 3 3 0.04% 0.04%
D 7709 7315 4253 4253 55.17% 58.14%

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 8501 43.37 873 855 176.3
A 0 226 7465 37.5 873 855 176.3
A 3 137 7193 35.95 873 855 176.3
B 10 247 44517 259.61 870 845 168.2
B 12 111 20521 116.96 870 845 168.2
B 11 111 18343 104.02 870 845 168.2
C 3 233 137750 697.09 840 845 196.4
C 14 238 130446 659.9 840 845 196.4
C 9 54 15447 74.35 840 845 196.4
D 7 238 12098452 87468.7 570 553 138.3
D 1 52 146525 1055.39 570 553 138.3
D 12 218 142142 1023.7 570 553 138.3

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