ASTROSAT CZTI

Data Quality Report

Orbit 11143

Creation date: 2024-06-27T16:08:50.075403
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/AS1G08_071T02_9000001620_11143cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11143cztM0_level2_quad_clean.evt
Size (bytes)1,963,186,560242,824,320
Size1.8 GB 231.6 MB
Events in quadrant A19,477,5471,443,069
Events in quadrant B14,686,5301,466,983
Events in quadrant C9,903,7951,510,152
Events in quadrant D13,921,8581,435,394

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048240
B047535
C047432
D047735

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383
B0405
C0395
D0394

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0775775061
B0617933905
C0480873314
D0615125427

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21749248011.402823%
B2177012095.553514%
C217701250.574185%
D217269514.377244%

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 32044 21827 1831 1831 5.71% 8.39%
B 32045 21848 670 670 2.09% 3.07%
C 32045 21836 16 16 0.05% 0.07%
D 32045 21791 710 710 2.22% 3.26%

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 8 5 5663934 11270.97 2483 2430 502.3
A 14 238 2726453 5423.01 2483 2430 502.3
A 8 15 781868 1551.71 2483 2430 502.3
B 4 239 2667517 5494.59 2544 2478 485.0
B 10 16 1012691 2082.79 2544 2478 485.0
B 15 204 398649 816.8 2544 2478 485.0
C 5 128 89024 148.67 2500 2518 581.9
C 9 204 28528 44.7 2500 2518 581.9
C 9 54 19838 29.77 2500 2518 581.9
D 10 253 2096564 3515.63 2458 2387 595.7
D 2 14 636738 1064.93 2458 2387 595.7
D 10 157 438521 732.17 2458 2387 595.7

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