ASTROSAT CZTI

Data Quality Report

Orbit 20873

Creation date: 2024-06-27T18:20:35.096096
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_160T01_9000003078_20873cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20873cztM0_level2_quad_clean.evt
Size (bytes)581,466,24070,395,840
Size554.5 MB 67.1 MB
Events in quadrant A3,252,850450,267
Events in quadrant B3,402,406456,914
Events in quadrant C3,196,095421,783
Events in quadrant D7,348,484379,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129511
B0135711
C0127921
D0260632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60541051.734390%
B60541482.444665%
C60541171.932607%
D6053110018.172807%

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 7354 6055 0 0 0.00% 0.00%
B 7354 6055 11 11 0.15% 0.18%
C 7354 6055 0 0 0.00% 0.00%
D 7353 6054 1234 1234 16.78% 20.38%

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 7300 38.51 846 830 168.0
A 3 137 6729 35.11 846 830 168.0
A 12 194 6086 31.28 846 830 168.0
B 3 64 45584 287.4 831 813 155.8
B 0 189 44128 278.05 831 813 155.8
B 0 229 29072 181.4 831 813 155.8
C 14 238 126514 685.07 786 792 183.5
C 13 61 5402 25.12 786 792 183.5
C 7 247 2719 10.5 786 792 183.5
D 1 20 2679848 14347.63 774 754 186.7
D 1 52 1616746 8654.29 774 754 186.7
D 1 239 44740 235.56 774 754 186.7

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