ASTROSAT CZTI

Data Quality Report

Orbit 12794

Creation date: 2024-06-27T16:32:25.816288
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/AS1G08_071T01_9000001888_12794cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12794cztM0_level2_quad_clean.evt
Size (bytes)305,012,16036,547,200
Size290.9 MB 34.9 MB
Events in quadrant A1,772,070222,566
Events in quadrant B2,184,664219,462
Events in quadrant C1,623,948224,019
Events in quadrant D3,439,652214,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073702
B087021
C068571
D0122391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3170742.334385%
B31702106.624606%
C3170551.735016%
D317091328.801262%

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 4466 3172 1 1 0.02% 0.03%
B 4466 3172 88 88 1.97% 2.77%
C 4466 3172 0 0 0.00% 0.00%
D 4466 3172 686 686 15.36% 21.63%

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 12 189 94990 1091.61 427 419 86.6
A 8 15 16329 183.65 427 419 86.6
A 9 143 14003 156.8 427 419 86.6
B 4 239 478564 5974.34 421 411 80.0
B 0 219 36048 445.27 421 411 80.0
B 3 209 9209 109.93 421 411 80.0
C 13 61 3092 27.77 416 419 96.2
C 7 235 1174 7.85 416 419 96.2
C 3 202 1015 6.19 416 419 96.2
D 1 52 1826882 20317.92 374 363 89.9
D 8 195 146086 1621.0 374 363 89.9
D 13 172 22792 249.5 374 363 89.9

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