ASTROSAT CZTI

Data Quality Report

Orbit 31848

Creation date: 2024-06-27T20:33:28.021046
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/AS1A10_109T01_9000004646_31848cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31848cztM0_level2_quad_clean.evt
Size (bytes)520,087,68097,562,880
Size496.0 MB 93.0 MB
Events in quadrant A3,155,405652,461
Events in quadrant B4,881,965641,786
Events in quadrant C3,902,989608,569
Events in quadrant D3,383,212611,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131471
B0191561
C0156471
D0140661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6305530.840603%
B63061181.871234%
C63064026.374881%
D6306460.729464%

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 7170 6306 0 0 0.00% 0.00%
B 7171 6307 6 6 0.08% 0.10%
C 7171 6307 64 64 0.89% 1.01%
D 7171 6307 5 5 0.07% 0.08%

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 13 6 14261 82.57 814 801 163.0
A 13 254 11066 62.97 814 801 163.0
A 3 137 8089 44.71 814 801 163.0
B 6 159 1687887 11130.4 797 780 151.6
B 10 247 27017 173.09 797 780 151.6
B 0 190 20793 132.03 797 780 151.6
C 0 10 357554 1968.99 770 779 181.2
C 14 238 194589 1069.61 770 779 181.2
C 3 233 163867 900.06 770 779 181.2
D 8 195 264289 1397.83 793 774 188.5
D 12 233 57475 300.77 793 774 188.5
D 2 250 37445 194.52 793 774 188.5

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