ASTROSAT CZTI

Data Quality Report

Orbit 14031

Creation date: 2024-06-27T16:49:25.086268
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_002T01_9000002072_14031cztM0_level2.evt modeM0/AS1G08_002T01_9000002072_14031cztM0_level2_quad_clean.evt
Size (bytes)550,137,60094,363,200
Size524.7 MB 90.0 MB
Events in quadrant A3,437,133590,958
Events in quadrant B3,521,776593,065
Events in quadrant C3,733,385597,264
Events in quadrant D5,462,576557,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152473
B0154082
C0158282
D0214842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7457460.616870%
B7457861.153279%
C7457330.442537%
D74574185.605471%

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 7778 7459 0 0 0.00% 0.00%
B 7778 7459 8 8 0.10% 0.11%
C 7778 7459 4 4 0.05% 0.05%
D 7778 7459 348 348 4.47% 4.67%

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 12 189 32707 175.78 882 861 181.2
A 0 226 7749 38.02 882 861 181.2
A 2 79 7010 33.94 882 861 181.2
B 3 64 29775 169.39 878 856 170.7
B 3 209 21765 122.48 878 856 170.7
B 12 111 20593 115.61 878 856 170.7
C 3 233 197709 970.26 863 866 202.9
C 14 220 172205 844.55 863 866 202.9
C 13 61 6126 25.93 863 866 202.9
D 1 52 1195970 5430.2 830 812 220.1
D 13 104 734208 3332.18 830 812 220.1
D 10 157 199048 900.68 830 812 220.1

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