ASTROSAT CZTI

Data Quality Report

Orbit 16894

Creation date: 2024-06-27T17:29:11.731125
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_004T03_9000002508_16894cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16894cztM0_level2_quad_clean.evt
Size (bytes)233,599,68031,544,640
Size222.8 MB 30.1 MB
Events in quadrant A2,328,688177,470
Events in quadrant B1,470,624200,295
Events in quadrant C1,437,446189,691
Events in quadrant D1,644,907186,206

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087191
B060211
C059721
D066531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280545416.185383%
B28051354.812834%
C28051555.525847%
D28051404.991087%

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 3591 2807 198 198 5.51% 7.05%
B 3591 2807 0 0 0.00% 0.00%
C 3591 2807 5 5 0.14% 0.18%
D 3591 2807 17 17 0.47% 0.61%

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 15 174 966221 13207.42 349 340 73.1
A 12 189 19789 265.94 349 340 73.1
A 0 226 3047 37.02 349 340 73.1
B 15 35 25833 350.13 364 353 72.8
B 0 219 11020 146.58 364 353 72.8
B 12 111 8578 113.02 364 353 72.8
C 14 238 52700 633.27 346 346 82.7
C 5 112 18184 215.77 346 346 82.7
C 14 225 13200 155.48 346 346 82.7
D 1 52 307235 3529.11 349 337 87.0
D 2 234 10068 111.89 349 337 87.0
D 15 145 7225 79.2 349 337 87.0

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