ASTROSAT CZTI

Data Quality Report

Orbit 10169

Creation date: 2024-06-27T15:55:53.494694
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/AS1A03_133T01_9000001464_10169cztM0_level2.evt modeM0/AS1A03_133T01_9000001464_10169cztM0_level2_quad_clean.evt
Size (bytes)2,214,181,440354,156,480
Size2.1 GB 337.7 MB
Events in quadrant A13,706,2412,217,468
Events in quadrant B14,138,7392,239,259
Events in quadrant C12,797,9532,223,607
Events in quadrant D24,454,0792,047,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05880
B05880
C05880
D05880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0608856
B0615567
C0590565
D0926895

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290782440.839122%
B290772560.880421%
C290781100.378293%
D2907810763.700392%

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 31718 29081 65 65 0.20% 0.22%
B 31718 29082 26 26 0.08% 0.09%
C 31718 29082 0 0 0.00% 0.00%
D 31718 29081 874 874 2.76% 3.01%

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 353278 513.8 3365 3291 681.2
A 8 15 151834 218.07 3365 3291 681.2
A 15 223 146874 210.79 3365 3291 681.2
B 0 214 239039 365.67 3385 3305 644.7
B 4 48 144576 219.14 3385 3305 644.7
B 11 51 136892 207.22 3385 3305 644.7
C 13 61 24733 28.46 3268 3289 753.5
C 14 67 18235 19.83 3268 3289 753.5
C 12 4 18145 19.72 3268 3289 753.5
D 1 52 8899147 11546.18 3194 3109 770.5
D 8 195 1304864 1689.55 3194 3109 770.5
D 12 33 572211 738.64 3194 3109 770.5

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