ASTROSAT CZTI

Data Quality Report

Orbit 24825

Creation date: 2024-06-27T19:10:17.457236
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_045T01_9000003628_24825cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24825cztM0_level2_quad_clean.evt
Size (bytes)538,660,80067,991,040
Size513.7 MB 64.8 MB
Events in quadrant A3,520,185417,713
Events in quadrant B4,048,376416,317
Events in quadrant C4,138,412389,799
Events in quadrant D4,167,850383,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140172
B0158472
C0167203
D0166312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6473510.787888%
B64731732.672640%
C64721312.024104%
D6472280.432633%

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 7773 6474 0 0 0.00% 0.00%
B 7773 6474 61 61 0.78% 0.94%
C 7772 6473 0 0 0.00% 0.00%
D 7772 6473 3 3 0.04% 0.05%

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 8639 42.39 914 898 182.6
A 3 137 7900 38.34 914 898 182.6
A 0 226 7621 36.81 914 898 182.6
B 3 64 512702 3006.42 900 880 170.2
B 12 111 20260 113.83 900 880 170.2
B 11 111 18369 102.73 900 880 170.2
C 7 247 684728 3507.06 848 856 195.0
C 14 238 137499 700.74 848 856 195.0
C 13 61 5872 25.72 848 856 195.0
D 8 195 825516 4001.8 861 838 206.1
D 1 52 87419 420.14 861 838 206.1
D 2 234 21978 102.58 861 838 206.1

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