ASTROSAT CZTI

Data Quality Report

Orbit 14271

Creation date: 2024-06-27T16:52:44.179407
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/AS1G08_014T01_9000002104_14271cztM0_level2.evt modeM0/AS1G08_014T01_9000002104_14271cztM0_level2_quad_clean.evt
Size (bytes)474,151,68087,621,120
Size452.2 MB 83.6 MB
Events in quadrant A3,193,302572,646
Events in quadrant B3,383,797573,272
Events in quadrant C3,286,371545,320
Events in quadrant D4,084,671538,505

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130212
B0136171
C0130561
D0159911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6072580.955204%
B60721131.861001%
C6072440.724638%
D60721181.943347%

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 7353 6075 1 1 0.01% 0.02%
B 7353 6075 25 25 0.34% 0.41%
C 7353 6075 1 1 0.01% 0.02%
D 7353 6075 49 49 0.67% 0.81%

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 12 189 90624 561.11 802 785 160.1
A 3 1 7502 41.95 802 785 160.1
A 0 226 7484 41.84 802 785 160.1
B 0 229 221932 1490.23 786 767 148.4
B 10 244 31372 206.22 786 767 148.4
B 0 189 24901 162.62 786 767 148.4
C 3 233 282610 1605.53 768 775 175.5
C 10 22 12181 64.98 768 775 175.5
C 13 61 5560 27.26 768 775 175.5
D 12 110 357817 1952.5 777 759 182.9
D 10 199 213154 1161.44 777 759 182.9
D 8 195 204301 1113.03 777 759 182.9

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