ASTROSAT CZTI

Data Quality Report

Orbit 26823

Creation date: 2024-06-27T19:33:22.877160
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/AS1A09_145T01_9000003866_26823cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26823cztM0_level2_quad_clean.evt
Size (bytes)556,951,68084,614,400
Size531.2 MB 80.7 MB
Events in quadrant A4,618,114558,536
Events in quadrant B3,266,784570,744
Events in quadrant C3,014,388543,932
Events in quadrant D5,588,650496,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176420
B0130330
C0121660
D0204020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56002083.714286%
B56011192.124621%
C5601871.553294%
D560194416.854133%

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 6890 5601 69 69 1.00% 1.23%
B 6890 5601 31 31 0.45% 0.55%
C 6891 5602 8 8 0.12% 0.14%
D 6891 5602 545 545 7.91% 9.73%

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 0 13 1654068 10813.59 757 747 152.9
A 8 255 46158 297.01 757 747 152.9
A 13 254 9143 54.91 757 747 152.9
B 0 189 183690 1290.24 747 732 141.8
B 3 64 110187 771.89 747 732 141.8
B 7 205 19151 129.89 747 732 141.8
C 14 238 117907 695.91 721 729 168.4
C 15 208 66266 389.22 721 729 168.4
C 3 233 16409 93.12 721 729 168.4
D 1 52 2458289 15128.92 674 658 162.4
D 7 80 475115 2920.71 674 658 162.4
D 2 250 84061 513.42 674 658 162.4

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