ASTROSAT CZTI

Data Quality Report

Orbit 22749

Creation date: 2024-06-27T18:45:09.011988
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/AS1A08_007T01_9000003362_22749cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22749cztM0_level2_quad_clean.evt
Size (bytes)1,310,880,960277,332,480
Size1.2 GB 264.5 MB
Events in quadrant A8,945,1361,793,352
Events in quadrant B9,274,3601,815,493
Events in quadrant C9,187,8171,739,619
Events in quadrant D10,971,0311,705,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396813
B0402863
C0399793
D0459363

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19548880.450174%
B195491150.588265%
C195491740.890071%
D195493521.800604%

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 21453 19551 0 0 0.00% 0.00%
B 21454 19552 5 5 0.02% 0.03%
C 21454 19552 1 1 0.00% 0.01%
D 21454 19552 259 259 1.21% 1.32%

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 13 254 32859 66.5 2311 2262 460.1
A 0 226 19948 38.44 2311 2262 460.1
A 3 137 19378 37.2 2311 2262 460.1
B 0 190 65229 143.68 2315 2254 438.3
B 0 230 51879 113.22 2315 2254 438.3
B 12 111 51860 113.18 2315 2254 438.3
C 14 238 349990 668.92 2230 2246 519.9
C 10 22 72177 134.52 2230 2246 519.9
C 2 16 61472 113.93 2230 2246 519.9
D 1 52 1429078 2617.8 2252 2187 545.1
D 12 233 308391 561.77 2252 2187 545.1
D 2 152 236887 430.58 2252 2187 545.1

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