ASTROSAT CZTI

Data Quality Report

Orbit 38275

Creation date: 2024-06-27T21:50:37.740022
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/AS1A07_145T01_9000005370_38275cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38275cztM0_level2_quad_clean.evt
Size (bytes)362,905,92092,404,800
Size346.1 MB 88.1 MB
Events in quadrant A2,703,289619,826
Events in quadrant B2,499,123641,540
Events in quadrant C2,593,823619,758
Events in quadrant D5,241,826561,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110583
B0106452
C0106302
D0193182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085140.275320%
B5085350.688299%
C5085160.314651%
D50851673.284169%

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 7238 5086 5 5 0.07% 0.10%
B 7238 5086 21 21 0.29% 0.41%
C 7238 5086 13 13 0.18% 0.26%
D 7238 5086 167 167 2.31% 3.28%

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 367233 3122.78 586 573 117.4
A 12 189 23997 199.5 586 573 117.4
A 7 16 16888 138.95 586 573 117.4
B 5 172 86897 767.87 589 574 112.4
B 4 232 35869 313.96 589 574 112.4
B 0 229 34447 301.31 589 574 112.4
C 15 214 212928 1581.48 581 589 134.3
C 0 10 51358 378.12 581 589 134.3
C 15 208 23285 169.04 581 589 134.3
D 10 203 1732756 12534.61 572 557 138.2
D 13 138 633928 4583.23 572 557 138.2
D 12 235 349129 2522.35 572 557 138.2

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