ASTROSAT CZTI

Data Quality Report

Orbit 18336

Creation date: 2024-06-27T17:48:30.376520
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/AS1A06_006T01_9000002720_18336cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18336cztM0_level2_quad_clean.evt
Size (bytes)497,234,88083,943,360
Size474.2 MB 80.1 MB
Events in quadrant A3,143,237529,269
Events in quadrant B3,363,529539,031
Events in quadrant C3,244,671519,765
Events in quadrant D4,857,184491,420

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135851
B0142142
C0136321
D0188661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6637190.286274%
B6636270.406872%
C6636430.647981%
D66361412.124774%

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 7772 6638 1 1 0.01% 0.02%
B 7771 6637 1 1 0.01% 0.02%
C 7771 6637 0 0 0.00% 0.00%
D 7771 6637 75 75 0.97% 1.13%

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 15 174 11368 64.49 813 797 163.9
A 0 226 7189 38.99 813 797 163.9
A 3 137 5914 31.22 813 797 163.9
B 7 220 81039 513.01 821 804 156.4
B 0 197 37223 232.86 821 804 156.4
B 4 216 18035 110.17 821 804 156.4
C 14 238 121228 660.11 783 789 182.5
C 3 233 69282 375.4 783 789 182.5
C 13 61 5558 26.14 783 789 182.5
D 13 168 1515711 8009.13 783 760 189.2
D 1 52 174203 916.95 783 760 189.2
D 2 33 74796 391.41 783 760 189.2

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