ASTROSAT CZTI

Data Quality Report

Orbit 28475

Creation date: 2024-06-27T19:52:08.914563
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/AS1A10_050T06_9000004092_28475cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28475cztM0_level2_quad_clean.evt
Size (bytes)597,974,400100,077,120
Size570.3 MB 95.4 MB
Events in quadrant A3,696,955648,902
Events in quadrant B5,775,384652,625
Events in quadrant C3,580,207627,642
Events in quadrant D4,580,633612,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155412
B0217842
C0151342
D0182652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70231041.480849%
B7023126918.069201%
C70231041.480849%
D70231191.694433%

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 7843 7023 46 46 0.59% 0.65%
B 7843 7023 945 945 12.05% 13.46%
C 7843 7023 4 4 0.05% 0.06%
D 7843 7023 128 128 1.63% 1.82%

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 12 96 326430 1848.87 873 858 176.1
A 13 254 11889 62.64 873 858 176.1
A 3 137 8621 44.08 873 858 176.1
B 10 245 2837172 19933.73 743 725 142.3
B 12 111 18274 123.33 743 725 142.3
B 11 111 16422 110.31 743 725 142.3
C 14 238 135295 680.38 838 845 197.6
C 7 220 117766 591.68 838 845 197.6
C 7 247 26324 128.94 838 845 197.6
D 1 52 786654 3911.76 837 815 200.9
D 8 195 605521 3010.11 837 815 200.9
D 2 234 22269 106.79 837 815 200.9

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