ASTROSAT CZTI

Data Quality Report

Orbit 29936

Creation date: 2024-06-27T20:08:58.522337
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_058T01_9000004298_29936cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29936cztM0_level2_quad_clean.evt
Size (bytes)260,095,68041,708,160
Size248.0 MB 39.8 MB
Events in quadrant A1,644,633270,788
Events in quadrant B2,500,784266,113
Events in quadrant C1,710,736251,433
Events in quadrant D1,810,388255,141

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A066441
B093601
C068201
D072761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3075943.056911%
B30751284.162602%
C30751585.138211%
D3075622.016260%

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 4255 3076 1 1 0.02% 0.03%
B 4255 3076 0 0 0.00% 0.00%
C 4255 3076 0 0 0.00% 0.00%
D 4255 3076 2 2 0.05% 0.07%

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 8 192 13180 149.54 422 413 85.4
A 13 254 5879 64.02 422 413 85.4
A 3 137 3996 41.97 422 413 85.4
B 6 159 876347 11166.3 412 402 78.4
B 12 111 9224 112.46 412 402 78.4
B 11 111 8522 103.51 412 402 78.4
C 14 238 77516 835.48 396 399 92.3
C 3 233 43460 466.52 396 399 92.3
C 14 254 18944 200.92 396 399 92.3
D 8 195 195308 1984.11 410 399 98.2
D 2 250 21465 214.44 410 399 98.2
D 13 189 18758 186.89 410 399 98.2

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