ASTROSAT CZTI

Data Quality Report

Orbit 18506

Creation date: 2024-06-27T17:50:42.689023
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_075T08_9000002744_18506cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18506cztM0_level2_quad_clean.evt
Size (bytes)176,063,04027,720,000
Size167.9 MB 26.4 MB
Events in quadrant A1,319,808160,333
Events in quadrant B1,290,332165,965
Events in quadrant C1,236,757161,494
Events in quadrant D1,298,146156,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057241
B055981
C055441
D057891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2716431.583211%
B2716391.435935%
C2716441.620029%
D2716421.546392%

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 2716 2716 5 5 0.18% 0.18%
B 2716 2716 0 0 0.00% 0.00%
C 2716 2716 0 0 0.00% 0.00%
D 2716 2716 8 8 0.29% 0.29%

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 13 74569 1104.7 322 314 67.2
A 13 254 3382 45.64 322 314 67.2
A 5 98 3094 41.36 322 314 67.2
B 10 245 22811 344.94 319 310 65.2
B 7 220 7912 116.54 319 310 65.2
B 12 111 7545 110.91 319 310 65.2
C 14 238 47483 645.84 304 305 73.0
C 13 61 2078 24.27 304 305 73.0
C 5 112 1353 14.35 304 305 73.0
D 7 238 81863 1052.33 312 302 77.5
D 7 38 12068 151.81 312 302 77.5
D 2 234 10784 135.24 312 302 77.5

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