ASTROSAT CZTI

Data Quality Report

Orbit 37784

Creation date: 2024-06-27T21:44:24.282999
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/AS1T05_057T01_9000005346_37784cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37784cztM0_level2_quad_clean.evt
Size (bytes)394,102,08056,963,520
Size375.8 MB 54.3 MB
Events in quadrant A2,616,114352,075
Events in quadrant B2,844,918340,131
Events in quadrant C3,173,713348,792
Events in quadrant D2,961,158333,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108303
B0116582
C0124872
D0121832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4999100.200040%
B49991723.440688%
C4999971.940388%
D4999611.220244%

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 6941 5000 8 8 0.12% 0.16%
B 6941 5000 163 163 2.35% 3.26%
C 6941 5000 108 108 1.56% 2.16%
D 6941 5000 63 63 0.91% 1.26%

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 10 83 343656 2983.71 569 560 115.0
A 9 143 15364 128.74 569 560 115.0
A 15 222 15362 128.72 569 560 115.0
B 4 81 328902 3063.02 557 541 107.2
B 5 172 195550 1819.08 557 541 107.2
B 0 230 55674 514.29 557 541 107.2
C 0 207 548752 4280.55 549 553 128.1
C 15 214 227839 1774.74 549 553 128.1
C 0 10 182126 1417.79 549 553 128.1
D 2 249 175374 1285.0 550 536 136.1
D 13 249 149557 1095.26 550 536 136.1
D 2 250 120204 879.52 550 536 136.1

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