ASTROSAT CZTI

Data Quality Report

Orbit 20832

Creation date: 2024-06-27T18:20:05.124694
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_9000003070_20832cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20832cztM0_level2_quad_clean.evt
Size (bytes)622,854,72089,064,000
Size594.0 MB 84.9 MB
Events in quadrant A3,094,880619,072
Events in quadrant B3,864,560602,565
Events in quadrant C3,114,704595,373
Events in quadrant D8,347,756425,269

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134291
B0156801
C0134851
D0295511

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6516681.043585%
B65161322.025783%
C6516620.951504%
D6516206531.691222%

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 7066 6516 0 0 0.00% 0.00%
B 7066 6516 47 47 0.67% 0.72%
C 7066 6517 0 0 0.00% 0.00%
D 7066 6517 2014 2014 28.50% 30.90%

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 11213 64.47 803 788 161.7
A 0 226 7187 39.58 803 788 161.7
A 3 137 6327 34.26 803 788 161.7
B 7 220 318641 2134.28 785 766 148.9
B 0 189 225267 1507.34 785 766 148.9
B 0 219 61765 409.56 785 766 148.9
C 14 238 119141 670.99 758 763 176.4
C 3 233 31445 173.91 758 763 176.4
C 9 54 5586 27.34 758 763 176.4
D 1 52 4768703 30212.39 657 637 157.8
D 1 20 649291 4110.13 657 637 157.8
D 9 1 197523 1247.55 657 637 157.8

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