ASTROSAT CZTI

Data Quality Report

Orbit 17921

Creation date: 2024-06-27T17:42:36.245440
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_096T06_9000002668_17921cztM0_level2.evt modeM0/AS1A05_096T06_9000002668_17921cztM0_level2_quad_clean.evt
Size (bytes)386,216,640114,229,440
Size368.3 MB 108.9 MB
Events in quadrant A2,735,860782,829
Events in quadrant B2,944,086805,299
Events in quadrant C2,981,553746,450
Events in quadrant D2,654,756734,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118042
B0122742
C0122012
D0118592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5586440.787683%
B5586731.306839%
C5586571.020408%
D5586180.322234%

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 6951 5587 10 10 0.14% 0.18%
B 6951 5587 22 22 0.32% 0.39%
C 6951 5587 0 0 0.00% 0.00%
D 6951 5587 6 6 0.09% 0.11%

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 71281 507.93 687 675 139.0
A 4 2 10746 72.45 687 675 139.0
A 0 226 6192 39.69 687 675 139.0
B 15 222 133526 1024.53 695 678 129.7
B 0 189 19362 144.09 695 678 129.7
B 0 244 17550 130.12 695 678 129.7
C 3 233 333006 2204.67 652 656 150.7
C 14 238 103245 680.53 652 656 150.7
C 13 61 4672 26.64 652 656 150.7
D 5 222 51767 297.36 652 635 172.0
D 12 110 48943 280.93 652 635 172.0
D 2 234 23029 130.23 652 635 172.0

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