ASTROSAT CZTI

Data Quality Report

Orbit 23409

Creation date: 2024-06-27T18:54:00.031115
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/AS1A07_127T02_9000003460_23409cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23409cztM0_level2_quad_clean.evt
Size (bytes)543,660,480106,012,800
Size518.5 MB 101.1 MB
Events in quadrant A3,537,944693,815
Events in quadrant B3,652,240697,542
Events in quadrant C4,219,529646,641
Events in quadrant D4,547,579652,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153752
B0156052
C0171682
D0184244

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7478350.468040%
B7478640.855844%
C74782343.129179%
D74772012.688244%

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 7953 7479 0 0 0.00% 0.00%
B 7953 7479 2 2 0.03% 0.03%
C 7953 7479 164 164 2.06% 2.19%
D 7952 7478 174 174 2.19% 2.33%

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 11305 56.3 917 898 184.9
A 3 137 8209 39.55 917 898 184.9
A 0 226 7916 37.96 917 898 184.9
B 0 189 48710 273.36 911 888 174.9
B 12 111 21078 115.41 911 888 174.9
B 11 111 18791 102.34 911 888 174.9
C 10 9 681103 3333.06 865 871 204.1
C 14 238 137218 668.09 865 871 204.1
C 7 247 16372 75.95 865 871 204.1
D 1 52 1029224 4764.12 888 864 215.9
D 12 227 101992 468.5 888 864 215.9
D 2 234 33874 152.93 888 864 215.9

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