ASTROSAT CZTI

Data Quality Report

Orbit 08334

Creation date: 2024-06-27T15:31:15.369702
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/AS1G07_029T01_9000001158_08334cztM0_level2.evt modeM0/AS1G07_029T01_9000001158_08334cztM0_level2_quad_clean.evt
Size (bytes)426,602,88076,026,240
Size406.8 MB 72.5 MB
Events in quadrant A2,996,943471,238
Events in quadrant B3,137,911478,276
Events in quadrant C3,192,024463,013
Events in quadrant D3,161,938447,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01301012
B01320712
C01367214
D01388710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6338300.473335%
B6338230.362891%
C6340490.772871%
D633960.094652%

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 7518 6343 8 8 0.11% 0.13%
B 7518 6344 1 1 0.01% 0.02%
C 7518 6344 40 40 0.53% 0.63%
D 7518 6344 0 0 0.00% 0.00%

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 14 111 35716 224.64 768 751 155.7
A 0 226 7617 44.11 768 751 155.7
A 12 194 6916 39.61 768 751 155.7
B 0 214 55762 370.78 774 755 148.4
B 0 219 19993 129.68 774 755 148.4
B 0 198 18814 121.73 774 755 148.4
C 9 54 303949 1758.01 741 746 172.5
C 13 61 5493 27.52 741 746 172.5
C 3 202 1854 6.42 741 746 172.5
D 12 221 301400 1690.06 734 716 177.9
D 2 152 54236 300.82 734 716 177.9
D 2 234 19535 105.78 734 716 177.9

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