ASTROSAT CZTI

Data Quality Report

Orbit 01348

Creation date: 2024-06-27T14:11:19.914869
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/AS1G04_002T02_9000000230_01348cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01348cztM0_level2_quad_clean.evt
Size (bytes)1,072,474,56097,508,160
Size1022.8 MB 93.0 MB
Events in quadrant A9,325,546622,881
Events in quadrant B8,346,557637,816
Events in quadrant C7,437,055628,284
Events in quadrant D6,937,993608,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323432
B0294021
C0267511
D0253011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65271612.466677%
B6527861.317604%
C652750.076605%
D6527530.812012%

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 7472 6527 949 949 12.70% 14.54%
B 7472 6527 377 377 5.05% 5.78%
C 7472 6528 171 171 2.29% 2.62%
D 7472 6528 213 213 2.85% 3.26%

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 15 127 1797607 3828.65 1936 1949 469.0
A 0 253 46860 95.76 1936 1949 469.0
A 4 32 27270 53.99 1936 1949 469.0
B 8 4 272702 565.97 2027 2036 478.2
B 5 191 201535 417.16 2027 2036 478.2
B 6 53 88824 181.48 2027 2036 478.2
C 15 241 301595 594.36 1815 1873 504.3
C 3 111 19727 35.41 1815 1873 504.3
C 3 79 14955 25.94 1815 1873 504.3
D 10 84 227875 416.32 1740 1793 543.1
D 10 125 57421 102.44 1740 1793 543.1
D 1 83 40945 72.1 1740 1793 543.1

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