ASTROSAT CZTI

Data Quality Report

Orbit 07622

Creation date: 2024-06-27T15:21:55.178755
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_178T01_9000001048_07622cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07622cztM0_level2_quad_clean.evt
Size (bytes)1,552,564,800256,432,320
Size1.4 GB 244.6 MB
Events in quadrant A10,090,2911,587,918
Events in quadrant B10,359,6731,611,995
Events in quadrant C13,662,7581,561,621
Events in quadrant D11,437,8511,507,942

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04495310
B0456457
C05483821
D0496129

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217461710.786352%
B217472561.177174%
C217434432.037437%
D217463291.512922%

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 23053 21754 1 1 0.00% 0.00%
B 23053 21754 22 22 0.10% 0.10%
C 23053 21754 251 251 1.09% 1.15%
D 23053 21754 210 210 0.91% 0.97%

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 13 251 170153 320.23 2565 2504 523.5
A 0 128 61469 112.63 2565 2504 523.5
A 0 226 24502 42.02 2565 2504 523.5
B 0 214 84372 166.84 2581 2517 490.6
B 4 81 67449 132.35 2581 2517 490.6
B 12 111 51377 99.59 2581 2517 490.6
C 9 68 3238875 5613.52 2485 2497 576.5
C 4 254 588945 1017.2 2485 2497 576.5
C 1 16 135070 229.95 2485 2497 576.5
D 13 104 854895 1412.95 2479 2405 603.3
D 2 14 592015 977.25 2479 2405 603.3
D 2 152 275049 451.89 2479 2405 603.3

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