ASTROSAT CZTI

Data Quality Report

Orbit 12621

Creation date: 2024-06-27T16:30:06.176037
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/AS1G08_071T01_9000001874_12621cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12621cztM0_level2_quad_clean.evt
Size (bytes)501,840,000102,312,000
Size478.6 MB 97.6 MB
Events in quadrant A2,972,756675,965
Events in quadrant B3,910,943665,931
Events in quadrant C3,006,469695,453
Events in quadrant D4,900,536641,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127732
B0157111
C0128411
D0187421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004621.032645%
B60043816.345769%
C6004550.916056%
D60042213.680879%

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 7340 6005 0 0 0.00% 0.00%
B 7340 6005 233 233 3.17% 3.88%
C 7340 6005 0 0 0.00% 0.00%
D 7340 6005 166 166 2.26% 2.76%

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 3 1 33631 213.33 763 746 154.1
A 12 189 8320 49.13 763 746 154.1
A 0 226 6932 40.13 763 746 154.1
B 4 239 744011 5322.0 747 731 139.7
B 0 85 99138 704.61 747 731 139.7
B 11 51 82354 584.43 747 731 139.7
C 15 208 25437 141.53 763 767 174.3
C 13 61 5537 27.37 763 767 174.3
C 12 4 5247 25.7 763 767 174.3
D 10 157 1138370 6446.73 741 721 176.5
D 1 52 687575 3892.2 741 721 176.5
D 1 255 123360 694.96 741 721 176.5

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