ASTROSAT CZTI

Data Quality Report

Orbit 00209

Creation date: 2024-06-27T13:57:54.723898
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_140T01_9000000018_00209cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00209cztM0_level2_quad_clean.evt
Size (bytes)1,061,576,64052,113,600
Size1012.4 MB 49.7 MB
Events in quadrant A8,367,068278,796
Events in quadrant B7,958,276287,466
Events in quadrant C7,341,777279,998
Events in quadrant D8,038,326264,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295780
B0284070
C0265660
D0286500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6700190.283582%
B670010.014925%
C670010.014925%
D67001692.522388%

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 8291 6702 216 216 2.61% 3.22%
B 8291 6702 85 85 1.03% 1.27%
C 8291 6702 59 59 0.71% 0.88%
D 8291 6702 358 358 4.32% 5.34%

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 0 96 169911 361.45 2071 2050 464.4
A 15 66 73924 154.76 2071 2050 464.4
A 12 150 54393 112.71 2071 2050 464.4
B 15 219 20320 37.03 2073 2087 492.4
B 0 183 11001 18.1 2073 2087 492.4
B 0 190 9297 14.64 2073 2087 492.4
C 9 54 26089 46.41 1857 1922 520.7
C 9 51 9255 14.08 1857 1922 520.7
C 1 1 8116 11.89 1857 1922 520.7
D 10 154 450811 809.74 1812 1871 554.4
D 1 5 171429 305.82 1812 1871 554.4
D 1 4 143412 255.29 1812 1871 554.4

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