ASTROSAT CZTI

Data Quality Report

Orbit 20161002_A02_063T01_9000000702_level2

Creation date: 2025-11-06T19:41:53.677237
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/AS1A02_063T01_9000000702cztM0_level2.fits modeM0/AS1A02_063T01_9000000702cztM0_level2_quad_clean.evt
Size (bytes)366,704,640394,738,560
Size349.7 MB 376.5 MB
Events in quadrant A2,205,1522,420,064
Events in quadrant B2,102,4442,419,117
Events in quadrant C2,108,1292,198,806
Events in quadrant D1,857,0462,087,025

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0844180
B0919350
C0978950
D0901150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0420
C0410
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08420
B08350
C08440
D08360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A413493970.960120%
B411065831.418284%
C4110916754.074534%
D411905761.398398%

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 50637 43127 0 0 0.00% 0.00%
B 50637 42929 0 0 0.00% 0.00%
C 50637 42968 0 0 0.00% 0.00%
D 50637 43038 0 0 0.00% 0.00%

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 14 188 2170 11.08 570 530 148.0
A 0 29 2131 10.81 570 530 148.0
A 14 204 1922 9.4 570 530 148.0
B 2 9 1870 11.7 555 525 115.0
B 14 254 1554 8.95 555 525 115.0
B 12 226 1499 8.47 555 525 115.0
C 1 80 1454 6.27 556 512 150.2
C 1 81 1447 6.22 556 512 150.2
C 12 241 1432 6.12 556 512 150.2
D 11 82 1425 6.67 528 479 141.9
D 3 14 1382 6.36 528 479 141.9
D 1 19 1380 6.35 528 479 141.9

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