ASTROSAT CZTI

Data Quality Report

Orbit 08907

Creation date: 2024-06-27T15:38:50.720395
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/AS1A03_092T01_9000001240_08907cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08907cztM0_level2_quad_clean.evt
Size (bytes)583,427,520113,840,640
Size556.4 MB 108.6 MB
Events in quadrant A5,080,116729,312
Events in quadrant B4,094,729737,684
Events in quadrant C3,533,286721,587
Events in quadrant D4,418,395702,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205443
B0175412
C0163692
D0185812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80111531.909874%
B80111642.047185%
C8011360.449382%
D8011831.036075%

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 8646 8014 86 86 0.99% 1.07%
B 8646 8014 64 64 0.74% 0.80%
C 8646 8014 0 0 0.00% 0.00%
D 8646 8014 38 38 0.44% 0.47%

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 8 5 1201517 6263.09 934 913 191.7
A 5 16 201223 1044.94 934 913 191.7
A 15 174 39324 200.38 934 913 191.7
B 10 16 206003 1134.56 939 917 180.8
B 0 219 132952 730.43 939 917 180.8
B 4 173 31199 167.52 939 917 180.8
C 9 68 12208 53.82 901 902 210.1
C 3 233 7189 29.93 901 902 210.1
C 13 61 7063 29.33 901 902 210.1
D 1 52 443576 1826.27 896 876 242.4
D 8 195 261720 1076.06 896 876 242.4
D 7 71 210533 864.9 896 876 242.4

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