ASTROSAT CZTI

Data Quality Report

Orbit 20190623_A06_005T02_9000002996_level2

Creation date: 2019-06-25T12:57:36.830106
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A06_005T02_9000002996cztM0_level2_bc.evt modeM0/AS1A06_005T02_9000002996cztM0_level2_quad_clean.evt
Size (bytes)2,387,609,280880,018,560
Size2.2 GB 839.3 MB
Events in quadrant A15,594,3385,664,729
Events in quadrant B16,966,8045,672,422
Events in quadrant C14,483,2745,373,894
Events in quadrant D20,578,1845,229,768

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01451620
B01515180
C01436440
D01617680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013960
B013960
C013960
D013960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687698931.298550%
B6876911101.614099%
C6876910221.486135%
D6876915752.290276%

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 80629 68772 58 58 0.07% 0.08%
B 80629 68769 12 12 0.01% 0.02%
C 80629 68771 0 0 0.00% 0.00%
D 80629 68768 347 347 0.43% 0.50%

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 14 238 530619 632.03 3794 3716 833.7
A 4 2 322510 382.4 3794 3716 833.7
A 10 253 85775 98.43 3794 3716 833.7
B 7 220 1002669 1371.36 3821 3731 728.4
B 0 198 263193 356.2 3821 3731 728.4
B 0 197 179324 241.06 3821 3731 728.4
C 3 233 469921 557.36 3608 3600 836.7
C 1 16 55209 61.68 3608 3600 836.7
C 9 54 51547 57.31 3608 3600 836.7
D 1 52 3711418 4416.53 3670 3547 839.5
D 7 38 822540 975.52 3670 3547 839.5
D 7 238 336916 397.08 3670 3547 839.5

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