ASTROSAT CZTI

Data Quality Report

Orbit 16939

Creation date: 2024-06-27T17:29:46.800640
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_182T03_9000002516_16939cztM0_level2.evt modeM0/AS1A05_182T03_9000002516_16939cztM0_level2_quad_clean.evt
Size (bytes)515,995,200101,888,640
Size492.1 MB 97.2 MB
Events in quadrant A4,098,017662,725
Events in quadrant B3,637,288668,841
Events in quadrant C3,786,743634,209
Events in quadrant D3,625,728628,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169571
B0153921
C0157221
D0154301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70611902.690837%
B70621371.939960%
C70621442.039082%
D70621151.628434%

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 7292 7063 96 96 1.32% 1.36%
B 7293 7064 17 17 0.23% 0.24%
C 7293 7064 0 0 0.00% 0.00%
D 7293 7064 29 29 0.40% 0.41%

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 877930 5185.85 832 813 169.1
A 0 23 20513 116.47 832 813 169.1
A 0 226 8404 44.88 832 813 169.1
B 15 35 142849 887.25 828 804 160.1
B 10 16 63408 391.04 828 804 160.1
B 0 197 57348 353.19 828 804 160.1
C 3 233 554775 2952.02 797 800 187.7
C 14 238 123282 652.68 797 800 187.7
C 13 61 5782 26.55 797 800 187.7
D 1 52 340707 1721.9 814 790 197.4
D 10 199 116218 584.72 814 790 197.4
D 2 152 32603 161.15 814 790 197.4

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