ASTROSAT CZTI

Data Quality Report

Orbit 19745

Creation date: 2024-06-27T18:06:26.711571
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/AS1C04_001T01_9000002948_19745cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19745cztM0_level2_quad_clean.evt
Size (bytes)495,907,200127,068,480
Size472.9 MB 121.2 MB
Events in quadrant A3,097,220858,673
Events in quadrant B3,345,016877,385
Events in quadrant C4,487,397828,586
Events in quadrant D3,630,710813,570

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137982
B0143652
C0176522
D0157373

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752270.399882%
B6752791.170024%
C67523445.094787%
D6751831.229447%

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 7867 6753 0 0 0.00% 0.00%
B 7867 6753 16 16 0.20% 0.24%
C 7867 6753 123 123 1.56% 1.82%
D 7866 6752 67 67 0.85% 0.99%

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 11 29 14733 87.75 800 783 159.0
A 0 226 6951 38.8 800 783 159.0
A 13 254 6092 33.4 800 783 159.0
B 7 220 124747 815.95 806 785 151.9
B 4 216 27957 178.85 806 785 151.9
B 0 214 17757 111.71 806 785 151.9
C 3 233 1326163 7530.85 761 765 176.0
C 14 238 121485 685.93 761 765 176.0
C 7 247 73166 411.38 761 765 176.0
D 1 52 514889 2807.2 766 744 183.2
D 7 238 119019 645.77 766 744 183.2
D 2 234 36817 196.95 766 744 183.2

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