ASTROSAT CZTI

Data Quality Report

Orbit 34672

Creation date: 2022-02-26T14:08:03.148452
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/AS1A11_065T13_9000004960_34672cztM0_level2.evt modeM0/AS1A11_065T13_9000004960_34672cztM0_level2_quad_clean.evt
Size (bytes)185,492,16025,050,240
Size176.9 MB 23.9 MB
Events in quadrant A1,269,906154,581
Events in quadrant B1,308,508157,743
Events in quadrant C1,238,658153,652
Events in quadrant D1,658,896142,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050822
B051561
C048631
D063691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2045391.907090%
B2045703.422983%
C2045180.880196%
D2045502.444988%

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 3628 2046 19 19 0.52% 0.93%
B 3628 2046 37 37 1.02% 1.81%
C 3628 2046 17 17 0.47% 0.83%
D 3628 2046 32 32 0.88% 1.56%

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 15 169 266807 5192.63 245 240 51.3
A 10 83 22076 425.36 245 240 51.3
A 9 143 16408 314.95 245 240 51.3
B 5 172 174179 3535.37 244 237 49.2
B 5 255 144782 2937.87 244 237 49.2
B 0 190 10867 216.05 244 237 49.2
C 14 67 139960 2462.85 238 240 56.7
C 15 214 88567 1556.95 238 240 56.7
C 0 10 70528 1238.97 238 240 56.7
D 8 195 494441 8217.19 236 228 60.1
D 2 249 71906 1191.78 236 228 60.1
D 12 233 35357 584.08 236 228 60.1

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