ASTROSAT CZTI

Data Quality Report

Orbit 13508

Creation date: 2024-06-27T16:41:51.680246
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/AS1A04_103T01_9000001988_13508cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13508cztM0_level2_quad_clean.evt
Size (bytes)584,127,360102,476,160
Size557.1 MB 97.7 MB
Events in quadrant A3,520,836654,690
Events in quadrant B4,403,151662,003
Events in quadrant C3,619,102653,116
Events in quadrant D5,634,873607,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155482
B0182031
C0155581
D0221251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7555550.727995%
B75552192.898743%
C7555220.291198%
D75555987.915288%

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 7931 7557 0 0 0.00% 0.00%
B 7931 7556 57 57 0.72% 0.75%
C 7931 7557 0 0 0.00% 0.00%
D 7931 7557 636 636 8.02% 8.42%

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 61183 328.01 898 877 183.9
A 14 238 9427 46.5 898 877 183.9
A 0 226 7976 38.61 898 877 183.9
B 3 64 814581 4783.77 895 873 170.1
B 0 230 28178 160.53 895 873 170.1
B 4 142 24323 137.86 895 873 170.1
C 3 233 217078 1062.98 871 875 203.4
C 13 61 6410 27.21 871 875 203.4
C 8 222 2776 9.35 871 875 203.4
D 12 110 2293449 11375.97 836 813 201.5
D 2 136 82946 407.54 836 813 201.5
D 8 195 71584 351.16 836 813 201.5

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