ASTROSAT CZTI

Data Quality Report

Orbit 34562

Creation date: 2022-02-18T10:31:46.992444
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/AS1A05_103T05_9000004938_34562cztM0_level2.evt modeM0/AS1A05_103T05_9000004938_34562cztM0_level2_quad_clean.evt
Size (bytes)150,863,0409,279,360
Size143.9 MB 8.8 MB
Events in quadrant A740,33148,373
Events in quadrant B1,171,97544,967
Events in quadrant C906,28041,698
Events in quadrant D1,655,62143,503

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029621
B044081
C034521
D058931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136550.366300%
B136515811.575092%
C1365695.054945%
D136518213.333333%

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 2708 1366 0 0 0.00% 0.00%
B 2708 1366 86 86 3.18% 6.30%
C 2708 1366 51 51 1.88% 3.73%
D 2708 1366 117 117 4.32% 8.57%

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 10 83 18531 475.43 179 175 38.6
A 0 31 13983 357.63 179 175 38.6
A 9 143 11004 280.47 179 175 38.6
B 5 172 391351 11280.85 170 165 34.7
B 0 229 37966 1090.09 170 165 34.7
B 0 190 35667 1023.79 170 165 34.7
C 0 10 181054 4469.32 166 167 40.5
C 15 214 57154 1408.02 166 167 40.5
C 3 233 7697 186.05 166 167 40.5
D 8 195 510488 11438.57 166 162 44.6
D 7 80 116832 2615.07 166 162 44.6
D 1 47 60228 1346.33 166 162 44.6

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