ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T09_9000003190_level2

Creation date: 2019-09-23T12:30:47.168070
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/AS1T03_138T09_9000003190cztM0_level2_bc.evt modeM0/AS1T03_138T09_9000003190cztM0_level2_quad_clean.evt
Size (bytes)176,541,12072,100,800
Size168.4 MB 68.8 MB
Events in quadrant A1,222,475457,210
Events in quadrant B1,134,452465,828
Events in quadrant C1,073,294442,727
Events in quadrant D1,535,168434,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118060
B0115570
C0115000
D0125320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54741843.361345%
B54741973.598831%
C54742254.110340%
D54741612.941176%

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 5584 5474 1 1 0.02% 0.02%
B 5584 5474 0 0 0.00% 0.00%
C 5584 5475 0 0 0.00% 0.00%
D 5584 5474 9 9 0.16% 0.16%

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 4 2 146165 2320.19 277 271 62.9
A 13 254 7537 115.55 277 271 62.9
A 12 96 3772 55.68 277 271 62.9
B 0 230 26533 457.16 282 273 57.4
B 0 190 12046 204.96 282 273 57.4
B 0 229 5370 88.73 282 273 57.4
C 0 239 24362 370.01 267 264 65.1
C 10 91 9662 144.3 267 264 65.1
C 3 233 4612 66.76 267 264 65.1
D 14 35 284821 4321.02 273 262 65.9
D 1 52 145315 2202.62 273 262 65.9
D 2 234 21783 326.8 273 262 65.9

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