ASTROSAT CZTI

Data Quality Report

Orbit 20190723_A05_082T09_9000003054_level2

Creation date: 2019-07-25T13:18:23.653920
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/AS1A05_082T09_9000003054cztM0_level2_bc.evt modeM0/AS1A05_082T09_9000003054cztM0_level2_quad_clean.evt
Size (bytes)2,002,642,560688,530,240
Size1.9 GB 656.6 MB
Events in quadrant A14,110,2994,478,659
Events in quadrant B12,457,7684,517,554
Events in quadrant C10,306,9544,326,935
Events in quadrant D20,402,2944,136,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190140
B01114720
C01036310
D01376950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4949218873.812737%
B494929781.976077%
C494897771.570046%
D4949224114.871494%

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 56754 49493 103 103 0.18% 0.21%
B 56754 49491 5 5 0.01% 0.01%
C 56754 49492 4 4 0.01% 0.01%
D 56754 49490 641 641 1.13% 1.30%

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 5 16 3955355 6891.35 2620 2571 573.6
A 12 16 48401 79.9 2620 2571 573.6
A 13 252 29910 47.66 2620 2571 573.6
B 7 220 807059 1591.14 2641 2571 505.6
B 0 244 226928 443.74 2641 2571 505.6
B 0 190 208553 407.4 2641 2571 505.6
C 7 247 188424 311.99 2517 2501 595.9
C 8 208 136515 224.88 2517 2501 595.9
C 0 207 135830 223.73 2517 2501 595.9
D 1 52 4070726 6876.62 2548 2457 591.6
D 1 20 3412118 5763.37 2548 2457 591.6
D 1 239 682824 1150.03 2548 2457 591.6

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