ASTROSAT CZTI

Data Quality Report

Orbit 34685

Creation date: 2022-07-18T18:12:07.486483
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/AS1T04_078T01_9000004962_34685cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34685cztM0_level2_quad_clean.evt
Size (bytes)507,355,20047,776,320
Size483.9 MB 45.6 MB
Events in quadrant A2,674,437278,245
Events in quadrant B3,665,392272,667
Events in quadrant C3,238,855270,346
Events in quadrant D5,434,069259,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109423
B0141012
C0126022
D0198972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5209150.287963%
B52093496.699942%
C5209981.881359%
D52091412.706854%

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 7244 5210 6 6 0.08% 0.12%
B 7244 5210 204 204 2.82% 3.92%
C 7244 5210 91 91 1.26% 1.75%
D 7244 5210 106 106 1.46% 2.03%

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 47710 367.3 643 630 128.2
A 9 143 36475 279.65 643 630 128.2
A 15 169 33381 255.51 643 630 128.2
B 5 172 770419 6478.3 620 604 118.8
B 5 255 205107 1720.97 620 604 118.8
B 0 218 156733 1313.89 620 604 118.8
C 0 10 255606 1806.9 611 616 141.1
C 15 214 223405 1578.72 611 616 141.1
C 0 207 160070 1129.92 611 616 141.1
D 8 195 2141759 12925.77 612 600 165.7
D 2 249 272290 1640.14 612 600 165.7
D 7 38 222805 1341.41 612 600 165.7

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