ASTROSAT CZTI

Data Quality Report

Orbit 16882

Creation date: 2024-06-27T17:28:57.949358
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_004T06_9000002506_16882cztM0_level2.evt modeM0/AS1A05_004T06_9000002506_16882cztM0_level2_quad_clean.evt
Size (bytes)624,697,92096,010,560
Size595.8 MB 91.6 MB
Events in quadrant A3,349,127627,169
Events in quadrant B3,739,078628,043
Events in quadrant C3,350,633609,586
Events in quadrant D7,998,132546,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147823
B0156672
C0146772
D0287162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7110811.139241%
B71101421.997187%
C71101221.715893%
D7110108815.302391%

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 7391 7113 5 5 0.07% 0.07%
B 7391 7113 36 36 0.49% 0.51%
C 7391 7113 0 0 0.00% 0.00%
D 7391 7113 736 736 9.96% 10.35%

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 15 174 36566 203.3 852 832 175.8
A 0 23 30383 168.12 852 832 175.8
A 0 226 9306 48.21 852 832 175.8
B 10 16 244506 1514.89 844 823 160.9
B 15 35 96809 596.71 844 823 160.9
B 0 229 29505 178.31 844 823 160.9
C 14 238 127524 655.11 819 825 193.4
C 3 233 12087 58.23 819 825 193.4
C 0 207 9894 46.89 819 825 193.4
D 1 52 4526533 23222.02 794 771 194.9
D 10 70 374656 1918.43 794 771 194.9
D 2 234 38927 195.78 794 771 194.9

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