ASTROSAT CZTI

Data Quality Report

Orbit 05678

Creation date: 2024-06-27T14:57:53.888902
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/AS1A02_077T01_9000000732_05678cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05678cztM0_level2_quad_clean.evt
Size (bytes)515,580,48086,034,240
Size491.7 MB 82.0 MB
Events in quadrant A3,326,185534,152
Events in quadrant B4,807,586521,862
Events in quadrant C3,253,635535,062
Events in quadrant D3,737,154511,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01508911
B01930337
C01493817
D0163927

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7217680.942220%
B72102964.105409%
C7215260.360360%
D7219650.900402%

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 7222 7222 7 7 0.10% 0.10%
B 7222 7222 97 97 1.34% 1.34%
C 7222 7222 4 4 0.06% 0.06%
D 7222 7222 31 31 0.43% 0.43%

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 50 61774 349.01 836 815 174.7
A 4 2 26682 148.1 836 815 174.7
A 12 194 8324 42.99 836 815 174.7
B 15 204 747362 4601.08 835 812 162.3
B 5 172 388576 2389.83 835 812 162.3
B 0 219 144858 887.77 835 812 162.3
C 1 16 60043 313.97 809 814 188.6
C 8 128 11681 57.61 809 814 188.6
C 8 112 8390 40.16 809 814 188.6
D 2 136 231302 1146.28 807 781 201.1
D 11 192 106735 526.86 807 781 201.1
D 2 152 93875 462.92 807 781 201.1

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