ASTROSAT CZTI

Data Quality Report

Orbit 08136

Creation date: 2024-06-27T15:28:28.929781
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/AS1A02_178T01_9000001118_08136cztM0_level2.evt modeM0/AS1A02_178T01_9000001118_08136cztM0_level2_quad_clean.evt
Size (bytes)811,022,40081,613,440
Size773.5 MB 77.8 MB
Events in quadrant A14,359,931302,079
Events in quadrant B3,193,135598,037
Events in quadrant C3,032,957579,176
Events in quadrant D3,542,682543,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0469092
B0137412
C0133942
D0151472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6394498077.885518%
B63941091.704723%
C6394410.641226%
D63941702.658743%

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 8779 6395 4575 4575 52.11% 71.54%
B 8779 6396 2 2 0.02% 0.03%
C 8779 6396 0 0 0.00% 0.00%
D 8779 6396 129 129 1.47% 2.02%

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 13 170 12620904 139887.11 442 432 90.2
A 13 248 34282 375.2 442 432 90.2
A 0 226 4038 39.97 442 432 90.2
B 0 214 29667 189.36 798 778 152.6
B 10 16 26791 170.5 798 778 152.6
B 0 219 20648 130.24 798 778 152.6
C 1 16 30854 168.95 769 774 178.0
C 13 61 5873 28.64 769 774 178.0
C 8 222 3800 17.0 769 774 178.0
D 1 52 420492 2301.78 749 727 182.4
D 13 122 270101 1477.11 749 727 182.4
D 2 234 21009 111.22 749 727 182.4

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