ASTROSAT CZTI

Data Quality Report

Orbit 09944

Creation date: 2024-06-27T15:52:45.077197
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_016T01_9000001420_09944cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09944cztM0_level2_quad_clean.evt
Size (bytes)497,211,84083,885,760
Size474.2 MB 80.0 MB
Events in quadrant A2,834,619547,674
Events in quadrant B3,206,782556,656
Events in quadrant C2,769,711553,680
Events in quadrant D5,840,520463,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01242
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012563135
B013656165
C012394126
D021892497

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992200.333778%
B5985951.587302%
C599560.100083%
D595475412.663755%

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 7442 6053 0 0 0.00% 0.00%
B 7442 6055 47 47 0.63% 0.78%
C 7442 6052 1 1 0.01% 0.02%
D 7442 6031 789 789 10.60% 13.08%

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 8 15 25953 171.72 723 710 147.0
A 15 174 17849 116.59 723 710 147.0
A 0 226 6757 41.14 723 710 147.0
B 4 81 176150 1257.46 731 716 139.5
B 4 239 91590 651.35 731 716 139.5
B 0 214 31297 219.19 731 716 139.5
C 14 234 7170 39.63 705 709 163.0
C 13 61 5344 28.43 705 709 163.0
C 12 4 4347 22.31 705 709 163.0
D 2 16 1067552 6212.8 647 633 171.7
D 12 233 1051500 6119.32 647 633 171.7
D 10 253 523223 3043.1 647 633 171.7

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