ASTROSAT CZTI

Data Quality Report

Orbit 17302

Creation date: 2024-06-27T17:34:45.713837
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_010T02_9000002556_17302cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17302cztM0_level2_quad_clean.evt
Size (bytes)530,588,160110,105,280
Size506.0 MB 105.0 MB
Events in quadrant A3,811,195708,321
Events in quadrant B3,842,425709,824
Events in quadrant C3,833,015671,623
Events in quadrant D4,018,919668,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170752
B0170352
C0169802
D0178232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8298750.903832%
B82991011.217014%
C82991201.445957%
D8299951.144716%

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 8973 8300 3 3 0.03% 0.04%
B 8974 8301 0 0 0.00% 0.00%
C 8974 8301 0 0 0.00% 0.00%
D 8974 8301 18 18 0.20% 0.22%

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 4 2 36396 179.2 977 956 197.8
A 14 235 19598 94.26 977 956 197.8
A 0 226 8499 38.14 977 956 197.8
B 12 111 23596 119.61 979 953 189.3
B 11 111 20456 103.02 979 953 189.3
B 14 111 17687 88.39 979 953 189.3
C 14 238 141799 639.76 935 938 220.2
C 3 233 41364 183.61 935 938 220.2
C 13 61 6648 25.93 935 938 220.2
D 5 222 196883 850.48 946 916 230.4
D 11 176 88891 381.8 946 916 230.4
D 1 52 86750 372.51 946 916 230.4

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