ASTROSAT CZTI

Data Quality Report

Orbit 17424

Creation date: 2024-06-27T17:36:21.197055
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_198T01_9000002578_17424cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17424cztM0_level2_quad_clean.evt
Size (bytes)491,736,96085,936,320
Size469.0 MB 82.0 MB
Events in quadrant A3,268,058549,501
Events in quadrant B3,662,265557,202
Events in quadrant C3,301,914529,453
Events in quadrant D4,218,732512,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138812
B0149712
C0139472
D0167252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500861.323077%
B65001201.846154%
C65001372.107692%
D65002293.523077%

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 7615 6500 0 0 0.00% 0.00%
B 7615 6500 14 14 0.18% 0.22%
C 7615 6500 0 0 0.00% 0.00%
D 7615 6500 137 137 1.80% 2.11%

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 4 2 8627 45.67 848 832 170.7
A 0 226 7373 38.32 848 832 170.7
A 12 194 6262 31.81 848 832 170.7
B 7 220 122575 762.93 842 822 159.6
B 4 48 117909 733.7 842 822 159.6
B 0 230 32053 195.7 842 822 159.6
C 14 238 125947 669.2 799 806 187.0
C 5 218 38003 198.91 799 806 187.0
C 5 219 13586 68.34 799 806 187.0
D 11 176 403174 2045.9 808 785 196.7
D 13 232 190980 967.03 808 785 196.7
D 7 238 189398 958.98 808 785 196.7

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