ASTROSAT CZTI

Data Quality Report

Orbit 20240817_A13_073T04_9000006396_level2

Creation date: 2024-08-21T08:48:33.560501
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/AS1A13_073T04_9000006396cztM0_level2.fits modeM0/AS1A13_073T04_9000006396cztM0_level2_quad_clean.evt
Size (bytes)272,514,240266,371,200
Size259.9 MB 254.0 MB
Events in quadrant A1,883,1501,879,344
Events in quadrant B112,868571
Events in quadrant C1,957,5621,877,769
Events in quadrant D1,666,1421,694,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01437770
B0405250
C0791290
D0952500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07700
B07700
C07700
D07700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3803819875.223724%
B380413803199.973713%
C380412120.557293%
D3803910822.844449%

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 40356 38040 0 0 0.00% 0.00%
B 40353 14377 0 0 0.00% 0.00%
C 40356 38042 0 0 0.00% 0.00%
D 40356 38030 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 15 236 1496 7.97 490 457 130.3
A 7 110 1486 7.9 490 457 130.3
A 7 30 1466 7.74 490 457 130.3
B 2 9 131 11.69 30 29 8.7
B 2 8 96 7.68 30 29 8.7
B 5 232 89 6.88 30 29 8.7
C 1 81 1444 7.07 517 479 136.5
C 1 80 1435 7.0 517 479 136.5
C 3 202 1434 7.0 517 479 136.5
D 1 31 1237 6.06 477 432 132.9
D 3 14 1186 5.67 477 432 132.9
D 10 113 1176 5.6 477 432 132.9

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