ASTROSAT CZTI

Data Quality Report

Orbit 18775

Creation date: 2024-06-27T17:55:01.014094
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_088T03_9000002808_18775cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18775cztM0_level2_quad_clean.evt
Size (bytes)524,220,48070,784,640
Size499.9 MB 67.5 MB
Events in quadrant A4,627,938417,576
Events in quadrant B3,521,785433,611
Events in quadrant C3,313,236421,886
Events in quadrant D3,977,895422,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177471
B0143321
C0135472
D0161011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64163114.847257%
B64161302.026185%
C64151362.120031%
D64152033.164458%

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 7511 6417 232 232 3.09% 3.62%
B 7511 6417 14 14 0.19% 0.22%
C 7510 6416 0 0 0.00% 0.00%
D 7510 6416 92 92 1.23% 1.43%

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 6 16 1375725 8087.96 839 821 170.0
A 11 29 10561 57.3 839 821 170.0
A 13 254 10557 57.27 839 821 170.0
B 7 220 158779 997.25 835 817 158.4
B 0 230 28589 175.33 835 817 158.4
B 0 197 22643 137.79 835 817 158.4
C 14 238 126217 668.62 808 814 187.6
C 3 233 26262 135.68 808 814 187.6
C 0 207 7514 35.72 808 814 187.6
D 14 34 769933 3853.2 825 801 199.6
D 9 1 50010 246.52 825 801 199.6
D 2 234 36883 180.76 825 801 199.6

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