ASTROSAT CZTI

Data Quality Report

Orbit 35438

Creation date: 2022-04-20T22:47:41.679877
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/AS1A11_097T17_9000005074_35438cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35438cztM0_level2_quad_clean.evt
Size (bytes)495,898,56051,275,520
Size472.9 MB 48.9 MB
Events in quadrant A2,463,284311,084
Events in quadrant B5,511,115294,278
Events in quadrant C3,137,462299,426
Events in quadrant D3,561,505290,481

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104053
B0197992
C0122882
D0139802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508950.098251%
B508962012.183140%
C50891522.986834%
D50891182.318727%

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 7093 5090 0 0 0.00% 0.00%
B 7093 5090 430 430 6.06% 8.45%
C 7093 5090 122 122 1.72% 2.40%
D 7093 5089 79 79 1.11% 1.55%

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 10 83 123298 1003.18 603 591 122.3
A 13 6 9126 69.78 603 591 122.3
A 13 254 7385 55.54 603 591 122.3
B 4 251 2261083 20284.26 579 565 111.4
B 5 236 585235 5246.41 579 565 111.4
B 5 31 112328 1002.88 579 565 111.4
C 0 10 429632 3246.02 573 578 132.2
C 15 214 209299 1579.09 573 578 132.2
C 4 254 200428 1511.97 573 578 132.2
D 1 52 474389 3362.27 578 562 140.9
D 13 249 311333 2205.23 578 562 140.9
D 8 195 166664 1178.66 578 562 140.9

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