ASTROSAT CZTI

Data Quality Report

Orbit 16172

Creation date: 2024-06-27T17:18:56.087404
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/AS1T02_109T01_9000002386_16172cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16172cztM0_level2_quad_clean.evt
Size (bytes)661,371,84083,162,880
Size630.7 MB 79.3 MB
Events in quadrant A6,797,802451,002
Events in quadrant B3,865,734539,118
Events in quadrant C3,570,434519,564
Events in quadrant D5,300,048498,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251612
B0162821
C0151651
D0209051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7318138618.939601%
B7318931.270839%
C73181061.448483%
D73185237.146761%

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 7614 7320 1100 1100 14.45% 15.03%
B 7614 7320 10 10 0.13% 0.14%
C 7614 7320 1 1 0.01% 0.01%
D 7614 7320 452 452 5.94% 6.17%

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 3648577 21951.17 812 794 166.2
A 0 253 23154 134.56 812 794 166.2
A 0 226 7190 38.49 812 794 166.2
B 0 244 201111 1166.13 889 866 171.7
B 4 216 51154 292.85 889 866 171.7
B 0 189 39639 225.79 889 866 171.7
C 14 238 130617 648.11 850 856 200.2
C 3 233 66284 326.79 850 856 200.2
C 7 247 41971 205.35 850 856 200.2
D 1 52 1752713 8383.53 843 815 209.0
D 2 33 268922 1283.0 843 815 209.0
D 2 234 31519 146.93 843 815 209.0

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