ASTROSAT CZTI

Data Quality Report

Orbit 08450

Creation date: 2024-06-27T15:32:53.462377
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/AS1A03_074T01_9000001192_08450cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08450cztM0_level2_quad_clean.evt
Size (bytes)406,146,24088,032,960
Size387.3 MB 84.0 MB
Events in quadrant A2,927,483546,218
Events in quadrant B3,118,781560,412
Events in quadrant C2,930,345568,760
Events in quadrant D2,887,829543,854

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131013
B0135342
C0131375
D0132242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395240.375293%
B6395340.531665%
C6394140.218955%
D6395140.218921%

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 7545 6396 0 0 0.00% 0.00%
B 7545 6396 0 0 0.00% 0.00%
C 7545 6396 0 0 0.00% 0.00%
D 7545 6396 6 6 0.08% 0.09%

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 0 226 7239 41.89 761 746 155.0
A 12 194 6742 38.69 761 746 155.0
A 3 137 3016 14.65 761 746 155.0
B 4 81 51752 351.21 768 750 145.2
B 0 214 28553 191.46 768 750 145.2
B 4 48 22166 147.48 768 750 145.2
C 13 61 5690 28.33 751 757 174.1
C 8 222 2224 8.43 751 757 174.1
C 3 202 1929 6.73 751 757 174.1
D 7 71 45213 244.81 739 719 181.7
D 2 234 19334 102.42 739 719 181.7
D 2 14 15269 80.06 739 719 181.7

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