ASTROSAT CZTI

Data Quality Report

Orbit 21152

Creation date: 2024-06-27T18:24:12.582027
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/AS1T03_136T01_9000003124_21152cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21152cztM0_level2_quad_clean.evt
Size (bytes)437,256,00068,607,360
Size417.0 MB 65.4 MB
Events in quadrant A2,548,633437,317
Events in quadrant B2,848,663441,660
Events in quadrant C2,566,045431,821
Events in quadrant D4,920,296396,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011426360
B012139380
C011417358
D019158789

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01124
B01124
C01122
D01126

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B031
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52831673.161083%
B52771943.676331%
C52872063.896350%
D526177314.693024%

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 6845 5315 0 0 0.00% 0.00%
B 6843 5309 8 8 0.12% 0.15%
C 6844 5322 0 0 0.00% 0.00%
D 6840 5295 565 565 8.26% 10.67%

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 13 254 7735 52.48 659 643 135.1
A 3 137 5750 37.79 659 643 135.1
A 0 226 5658 37.11 659 643 135.1
B 0 197 99990 773.14 657 639 128.5
B 0 189 57241 440.47 657 639 128.5
B 3 64 54829 421.7 657 639 128.5
C 14 238 97809 642.77 632 634 151.2
C 3 233 5457 31.9 632 634 151.2
C 13 61 4566 26.01 632 634 151.2
D 1 239 898199 6127.76 593 575 146.5
D 5 222 897654 6124.04 593 575 146.5
D 1 20 302116 2058.51 593 575 146.5

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