ASTROSAT CZTI

Data Quality Report

Orbit 36584

Creation date: 2024-06-27T21:28:47.306763
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_097T24_9000005224_36584cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36584cztM0_level2_quad_clean.evt
Size (bytes)202,728,96032,780,160
Size193.3 MB 31.3 MB
Events in quadrant A1,315,298209,138
Events in quadrant B1,298,202210,461
Events in quadrant C1,620,411201,007
Events in quadrant D1,735,231193,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053642
B053311
C062621
D068031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A247990.363050%
B2479240.968132%
C24791114.477612%
D24791084.356595%

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 3852 2480 4 4 0.10% 0.16%
B 3852 2480 18 18 0.47% 0.73%
C 3852 2480 75 75 1.95% 3.02%
D 3852 2480 79 79 2.05% 3.19%

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 96541 1536.12 303 297 62.7
A 9 143 25234 398.01 303 297 62.7
A 15 223 19327 303.73 303 297 62.7
B 4 171 77366 1309.42 297 289 58.9
B 5 255 20553 344.25 297 289 58.9
B 12 111 7300 119.11 297 289 58.9
C 14 254 248112 3661.17 283 285 67.7
C 0 10 127374 1877.5 283 285 67.7
C 15 214 105662 1556.75 283 285 67.7
D 2 250 224801 3171.21 285 278 70.8
D 12 128 73812 1038.61 285 278 70.8
D 2 137 72789 1024.16 285 278 70.8

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