ASTROSAT CZTI

Data Quality Report

Orbit 42762

Creation date: 2024-06-27T22:43:55.725757
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/AS1A05_013T01_9000005822_42762cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42762cztM0_level2_quad_clean.evt
Size (bytes)339,295,68090,008,640
Size323.6 MB 85.8 MB
Events in quadrant A3,476,040600,917
Events in quadrant B3,375,313606,891
Events in quadrant C2,620,668601,060
Events in quadrant D2,683,129552,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135432
B0134852
C0109412
D0115952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51931643.158097%
B51931713.292894%
C5193180.346620%
D5193631.213172%

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 7076 5193 121 121 1.71% 2.33%
B 7076 5194 71 71 1.00% 1.37%
C 7076 5194 16 16 0.23% 0.31%
D 7076 5194 68 68 0.96% 1.31%

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 13 248 608767 5099.49 582 572 119.3
A 10 83 560167 4692.0 582 572 119.3
A 12 189 24878 203.8 582 572 119.3
B 0 229 971122 8640.19 580 566 112.3
B 5 255 45574 400.68 580 566 112.3
B 0 245 33823 296.06 580 566 112.3
C 15 214 215209 1602.02 571 576 134.0
C 14 254 148963 1107.56 571 576 134.0
C 3 233 14147 101.29 571 576 134.0
D 12 233 145768 1049.0 568 553 138.4
D 5 70 74172 531.81 568 553 138.4
D 7 96 45546 325.02 568 553 138.4

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