ASTROSAT CZTI

Data Quality Report

Orbit 20377

Creation date: 2024-06-27T18:14:36.029714
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/AS1A05_205T01_9000003012_20377cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20377cztM0_level2_quad_clean.evt
Size (bytes)471,228,48094,720,320
Size449.4 MB 90.3 MB
Events in quadrant A3,117,871622,195
Events in quadrant B3,506,038627,684
Events in quadrant C3,105,779594,165
Events in quadrant D4,100,498571,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135782
B0147522
C0134422
D0166162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494260.400370%
B6494550.846936%
C6494400.615953%
D6494711.093317%

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 7679 6495 0 0 0.00% 0.00%
B 7679 6495 15 15 0.20% 0.23%
C 7679 6495 0 0 0.00% 0.00%
D 7679 6495 68 68 0.89% 1.05%

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 0 226 7026 38.41 809 792 162.3
A 13 254 6851 37.33 809 792 162.3
A 3 137 6274 33.77 809 792 162.3
B 7 220 181700 1173.64 807 788 154.1
B 0 197 38161 242.45 807 788 154.1
B 15 36 30832 194.91 807 788 154.1
C 14 238 119516 663.31 763 769 179.0
C 3 233 8474 43.04 763 769 179.0
C 13 61 5480 26.32 763 769 179.0
D 1 52 684611 3609.59 771 748 189.5
D 7 238 261714 1377.44 771 748 189.5
D 13 153 119820 628.49 771 748 189.5

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