ASTROSAT CZTI

Data Quality Report

Orbit 36388

Creation date: 2022-06-21T16:55:42.332202
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_097T24_9000005196_36388cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36388cztM0_level2_quad_clean.evt
Size (bytes)451,080,00051,802,560
Size430.2 MB 49.4 MB
Events in quadrant A2,846,992304,415
Events in quadrant B3,317,946304,784
Events in quadrant C3,171,259292,628
Events in quadrant D3,948,024277,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117493
B0132962
C0126362
D0153912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555390.162075%
B55531492.683234%
C5553250.450207%
D55533025.438502%

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 7286 5554 1 1 0.01% 0.02%
B 7286 5554 109 109 1.50% 1.96%
C 7286 5554 22 22 0.30% 0.40%
D 7286 5554 254 254 3.49% 4.57%

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 188436 1384.07 668 655 135.7
A 15 223 32568 235.22 668 655 135.7
A 12 189 31864 230.03 668 655 135.7
B 5 172 511887 4054.09 652 635 126.1
B 4 171 86619 681.83 652 635 126.1
B 5 255 56801 445.38 652 635 126.1
C 4 254 298602 2022.16 638 645 147.3
C 15 214 238527 1614.45 638 645 147.3
C 0 10 111137 749.88 638 645 147.3
D 12 6 707511 4590.07 628 610 154.0
D 2 137 300128 1944.84 628 610 154.0
D 13 249 167080 1080.93 628 610 154.0

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