ASTROSAT CZTI

Data Quality Report

Orbit 19458

Creation date: 2024-06-27T18:03:08.634132
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/AS1A05_229T02_9000002890_19458cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19458cztM0_level2_quad_clean.evt
Size (bytes)553,285,44092,099,520
Size527.7 MB 87.8 MB
Events in quadrant A3,821,264572,831
Events in quadrant B4,000,869573,522
Events in quadrant C4,176,505556,050
Events in quadrant D4,231,073547,233

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163082
B0168472
C0172892
D0177893

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77671211.557873%
B77682242.883625%
C77682082.677652%
D77671962.523497%

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 8627 7770 1 1 0.01% 0.01%
B 8628 7770 45 45 0.52% 0.58%
C 8628 7771 4 4 0.05% 0.05%
D 8627 7770 129 129 1.50% 1.66%

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 11 29 44929 223.36 968 946 196.9
A 3 1 22984 111.92 968 946 196.9
A 4 2 13231 62.39 968 946 196.9
B 7 220 129335 689.77 961 936 186.1
B 3 64 38761 203.2 961 936 186.1
B 0 197 25914 134.18 961 936 186.1
C 9 221 238633 1092.32 925 931 217.6
C 14 238 146015 666.71 925 931 217.6
C 3 233 115630 527.08 925 931 217.6
D 1 52 476242 2071.65 935 906 229.4
D 5 222 114529 495.2 935 906 229.4
D 7 238 66072 284.01 935 906 229.4

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