ASTROSAT CZTI

Data Quality Report

Orbit 00854

Creation date: 2024-06-27T14:03:51.005935
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/AS1P01_165T02_9000000120_00854cztM0_level2.evt modeM0/AS1P01_165T02_9000000120_00854cztM0_level2_quad_clean.evt
Size (bytes)953,403,84072,541,440
Size909.2 MB 69.2 MB
Events in quadrant A7,109,373449,193
Events in quadrant B7,798,467448,240
Events in quadrant C7,026,832445,311
Events in quadrant D6,546,959440,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253250
B0273320
C0250780
D0237260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5914330.557998%
B5914701.183632%
C5913390.659564%
D5913200.338238%

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 7214 5914 218 218 3.02% 3.69%
B 7214 5914 399 399 5.53% 6.75%
C 7213 5914 204 204 2.83% 3.45%
D 7213 5913 173 173 2.40% 2.93%

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 14 79 17097 34.27 1846 1868 444.4
A 0 214 9215 16.53 1846 1868 444.4
A 11 79 6421 10.25 1846 1868 444.4
B 5 191 127033 274.24 1947 1959 456.1
B 0 184 95924 206.03 1947 1959 456.1
B 5 200 50726 106.93 1947 1959 456.1
C 9 83 22025 40.65 1780 1851 496.3
C 3 111 21362 39.31 1780 1851 496.3
C 15 241 19007 34.57 1780 1851 496.3
D 1 4 69863 130.49 1702 1761 521.9
D 7 207 33977 61.73 1702 1761 521.9
D 13 73 19929 34.81 1702 1761 521.9

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