ASTROSAT CZTI

Data Quality Report

Orbit 25377

Creation date: 2024-06-27T19:16:58.924915
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_104T01_9000003710_25377cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25377cztM0_level2_quad_clean.evt
Size (bytes)520,280,64085,587,840
Size496.2 MB 81.6 MB
Events in quadrant A3,430,977545,015
Events in quadrant B3,462,850543,591
Events in quadrant C3,467,531517,794
Events in quadrant D4,934,309511,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142180
B0143210
C0142480
D0190190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6791881.295833%
B67911081.590340%
C67911482.179355%
D67916219.144456%

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 7621 6791 0 0 0.00% 0.00%
B 7621 6791 1 1 0.01% 0.01%
C 7621 6791 5 5 0.07% 0.07%
D 7620 6790 456 456 5.98% 6.72%

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 6 16 27147 149.0 882 866 176.4
A 13 254 11382 59.62 882 866 176.4
A 3 137 7836 39.52 882 866 176.4
B 0 190 37210 222.59 867 845 163.4
B 12 111 19636 115.02 867 845 163.4
B 11 111 18090 105.56 867 845 163.4
C 14 238 133961 683.75 836 842 194.7
C 9 54 50017 252.58 836 842 194.7
C 0 207 16440 80.12 836 842 194.7
D 7 238 1434738 7192.52 823 798 199.4
D 8 195 289071 1445.95 823 798 199.4
D 2 244 53430 264.0 823 798 199.4

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