ASTROSAT CZTI

Data Quality Report

Orbit 31253

Creation date: 2024-06-27T20:25:39.843692
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/AS1A10_073T02_9000004522_31253cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31253cztM0_level2_quad_clean.evt
Size (bytes)583,793,280105,762,240
Size556.7 MB 100.9 MB
Events in quadrant A3,394,170714,686
Events in quadrant B5,194,564708,095
Events in quadrant C4,183,321667,171
Events in quadrant D4,480,926672,501

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139642
B0197582
C0166442
D0177332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63151061.678543%
B63151953.087886%
C63154877.711797%
D63152043.230404%

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 7525 6316 0 0 0.00% 0.00%
B 7525 6316 2 2 0.03% 0.03%
C 7525 6316 172 172 2.29% 2.72%
D 7525 6316 87 87 1.16% 1.38%

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 13 254 12784 68.45 879 864 174.2
A 3 137 8260 42.47 879 864 174.2
A 0 226 7480 37.99 879 864 174.2
B 6 159 1669053 10420.93 854 832 160.1
B 0 190 90078 557.5 854 832 160.1
B 15 33 21267 127.65 854 832 160.1
C 2 16 403561 2175.67 805 813 185.1
C 0 10 269077 1449.18 805 813 185.1
C 3 233 148897 799.96 805 813 185.1
D 8 195 803690 3654.9 838 825 219.7
D 12 233 279840 1270.17 838 825 219.7
D 2 250 182190 825.63 838 825 219.7

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