ASTROSAT CZTI

Data Quality Report

Orbit 23120

Creation date: 2024-06-27T18:50:10.729603
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/AS1A08_008T01_9000003414_23120cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23120cztM0_level2_quad_clean.evt
Size (bytes)543,052,800140,123,520
Size517.9 MB 133.6 MB
Events in quadrant A3,851,477950,243
Events in quadrant B3,840,809972,262
Events in quadrant C3,617,796915,714
Events in quadrant D4,621,235877,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166722
B0164412
C0158302
D0190282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75832343.085850%
B75832863.771594%
C75832272.993538%
D75834275.631017%

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 7783 7584 52 52 0.67% 0.69%
B 7783 7583 51 51 0.66% 0.67%
C 7783 7583 1 1 0.01% 0.01%
D 7783 7584 283 283 3.64% 3.73%

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 6 16 390821 2150.71 896 875 181.3
A 13 254 11771 60.1 896 875 181.3
A 3 137 7973 39.15 896 875 181.3
B 0 190 117190 671.47 901 876 173.2
B 0 228 104125 596.05 901 876 173.2
B 0 189 64083 364.89 901 876 173.2
C 14 238 140345 692.21 865 867 201.5
C 2 16 66471 325.58 865 867 201.5
C 0 207 16960 79.87 865 867 201.5
D 13 153 665440 3200.76 860 833 207.6
D 12 233 259721 1246.81 860 833 207.6
D 7 38 255279 1225.42 860 833 207.6

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