ASTROSAT CZTI

Data Quality Report

Orbit 46155

Creation date: 2024-06-27T23:19:46.981992
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/AS1A13_092T03_9000006176_46155cztM0_level2.fits modeM0/AS1A13_092T03_9000006176_46155cztM0_level2_quad_clean.evt
Size (bytes)211,642,56026,435,520
Size201.8 MB 25.2 MB
Events in quadrant A1,785,205200,265
Events in quadrant B1,094,489218,981
Events in quadrant C2,798,568102,383
Events in quadrant D2,026,686158,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064451
B044421
C094391
D071741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16381187.203907%
B1638140.854701%
C163894457.631258%
D163832820.024420%

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 1638 1638 21 21 1.28% 1.28%
B 1638 1638 7 7 0.43% 0.43%
C 1638 1638 634 634 38.71% 38.71%
D 1638 1638 275 275 16.79% 16.79%

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 10 83 963873 22273.88 204 200 43.3
A 9 191 19241 440.1 204 200 43.3
A 7 3 7304 164.2 204 200 43.3
B 3 112 254226 6248.13 203 198 40.7
B 10 246 20270 493.7 203 198 40.7
B 0 155 9790 235.93 203 198 40.7
C 14 254 2127033 56926.88 155 156 37.4
C 12 2 49839 1329.79 155 156 37.4
C 11 16 7889 206.98 155 156 37.4
D 2 37 510142 10409.67 190 185 49.0
D 1 52 347703 7093.83 190 185 49.0
D 5 235 198161 4041.25 190 185 49.0

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