ASTROSAT CZTI

Data Quality Report

Orbit 16041

Creation date: 2024-06-27T17:17:10.422753
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/AS1G08_012T01_9000002370_16041cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16041cztM0_level2_quad_clean.evt
Size (bytes)548,997,120100,765,440
Size523.6 MB 96.1 MB
Events in quadrant A3,980,407618,133
Events in quadrant B4,146,884632,145
Events in quadrant C4,055,019618,598
Events in quadrant D3,881,480606,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173343
B0177072
C0172712
D0172692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8287510.615422%
B8287820.989502%
C82871171.411850%
D8287340.410281%

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 9723 8289 0 0 0.00% 0.00%
B 9723 8290 3 3 0.03% 0.04%
C 9723 8290 0 0 0.00% 0.00%
D 9723 8290 4 4 0.04% 0.05%

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 12 96 19971 91.27 1026 1006 207.8
A 0 226 9140 39.14 1026 1006 207.8
A 12 194 7653 31.99 1026 1006 207.8
B 0 245 38899 193.69 1029 1003 195.7
B 0 229 25883 127.16 1029 1003 195.7
B 12 111 23441 114.68 1029 1003 195.7
C 14 238 153253 648.71 993 1002 234.7
C 3 233 22183 90.25 993 1002 234.7
C 13 61 6972 25.44 993 1002 234.7
D 13 232 32867 129.64 1007 979 246.0
D 2 152 27678 108.55 1007 979 246.0
D 2 234 27266 106.87 1007 979 246.0

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