ASTROSAT CZTI

Data Quality Report

Orbit 42173

Creation date: 2024-06-27T22:37:45.061430
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_032T04_9000005766_42173cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42173cztM0_level2_quad_clean.evt
Size (bytes)317,540,16086,227,200
Size302.8 MB 82.2 MB
Events in quadrant A3,640,301561,264
Events in quadrant B2,481,187594,408
Events in quadrant C2,431,962565,975
Events in quadrant D2,785,866516,674

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140092
B0111332
C0106752
D0122782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53231743.268833%
B5324230.432006%
C532420.037566%
D5324771.446281%

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 9240 5325 159 159 1.72% 2.99%
B 9241 5326 13 13 0.14% 0.24%
C 9241 5326 0 0 0.00% 0.00%
D 9241 5326 84 84 0.91% 1.58%

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 15 222 851497 7182.53 575 563 118.5
A 10 83 536415 4523.0 575 563 118.5
A 12 189 14747 119.72 575 563 118.5
B 0 229 48532 421.45 578 561 113.8
B 3 112 47800 415.02 578 561 113.8
B 5 255 47641 413.62 578 561 113.8
C 15 214 224101 1678.39 566 570 133.2
C 13 61 3782 24.12 566 570 133.2
C 7 220 1908 10.05 566 570 133.2
D 12 6 267783 1926.94 560 544 138.7
D 13 249 166316 1195.31 560 544 138.7
D 10 199 78976 565.54 560 544 138.7

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