ASTROSAT CZTI

Data Quality Report

Orbit 37141

Creation date: 2024-06-27T21:36:05.734371
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/AS1A11_079T01_9000005284_37141cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37141cztM0_level2_quad_clean.evt
Size (bytes)423,192,96064,301,760
Size403.6 MB 61.3 MB
Events in quadrant A2,864,447395,133
Events in quadrant B3,317,369398,674
Events in quadrant C3,120,013389,424
Events in quadrant D3,131,622369,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01213
B01202
C01200
D01202

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012048196
B013664216
C012732269
D013381309

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562970.124356%
B56321622.876420%
C5629380.675076%
D5625901.600000%

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 9302 5641 0 0 0.00% 0.00%
B 9302 5642 84 84 0.90% 1.49%
C 9302 5641 22 22 0.24% 0.39%
D 9302 5637 81 81 0.87% 1.44%

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 10 83 264044 1930.33 669 655 136.4
A 13 6 9929 67.97 669 655 136.4
A 13 254 8667 58.72 669 655 136.4
B 5 172 611455 4823.7 658 641 126.6
B 4 232 97508 764.97 658 641 126.6
B 12 111 15739 119.23 658 641 126.6
C 15 214 261203 1729.28 647 651 150.7
C 0 10 165541 1094.37 647 651 150.7
C 14 254 153421 1013.93 647 651 150.7
D 2 249 288223 1822.67 644 626 157.8
D 12 217 84521 531.69 644 626 157.8
D 7 55 57091 357.85 644 626 157.8

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