ASTROSAT CZTI

Data Quality Report

Orbit 48276

Creation date: 2024-09-06T09:36:22.177845
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_029T01_9000006422_48276cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48276cztM0_level2_quad_clean.evt
Size (bytes)557,328,960121,060,800
Size531.5 MB 115.5 MB
Events in quadrant A8,100,178767,277
Events in quadrant B4,048,078824,105
Events in quadrant C3,698,663809,994
Events in quadrant D4,189,817731,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291452
B0171472
C0165353
D0178682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76546909.014894%
B76553614.715872%
C76541411.842174%
D76541882.456232%

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 8724 7657 7 7 0.08% 0.09%
B 8725 7658 25 25 0.29% 0.33%
C 8724 7657 6 6 0.07% 0.08%
D 8724 7657 12 12 0.14% 0.16%

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 4619469 24555.49 893 873 188.1
A 13 254 15681 78.73 893 873 188.1
A 0 243 12653 62.63 893 873 188.1
B 4 21 254074 1389.7 906 876 182.2
B 5 255 52546 283.6 906 876 182.2
B 0 200 41446 222.67 906 876 182.2
C 0 207 69027 319.79 895 898 213.0
C 12 2 64404 298.09 895 898 213.0
C 14 254 60224 278.47 895 898 213.0
D 7 67 294386 1264.24 898 869 232.2
D 2 165 138072 590.96 898 869 232.2
D 12 3 88719 378.39 898 869 232.2

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