ASTROSAT CZTI

Data Quality Report

Orbit 49635

Creation date: 2024-12-03T16:36:40.986780
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/AS1T05_233T01_9000006438_49635cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49635cztM0_level2_quad_clean.evt
Size (bytes)1,241,856,00049,363,200
Size1.2 GB 47.1 MB
Events in quadrant A15,333,773138,275
Events in quadrant B4,980,756655,374
Events in quadrant C9,003,48522,973
Events in quadrant D16,164,160229,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498630
B0192400
C0312170
D0523110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63006300100.000000%
B63005158.174603%
C63006300100.000000%
D6300618498.158730%

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 7364 6299 5830 5830 79.17% 92.55%
B 7365 6300 299 299 4.06% 4.75%
C 7364 6299 1170 1170 15.89% 18.57%
D 7365 6300 5953 5953 80.83% 94.49%

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 99 8780167 130418.85 173 165 67.3
A 10 83 2538365 37702.62 173 165 67.3
A 0 98 963967 14316.39 173 165 67.3
B 4 206 877640 6161.7 666 646 142.3
B 4 170 615053 4316.78 666 646 142.3
B 5 49 208204 1458.29 666 646 142.3
C 15 180 3145165 102051.12 44 40 30.8
C 15 163 1230894 39938.01 44 40 30.8
C 15 181 988639 32077.46 44 40 30.8
D 15 40 5934279 44043.46 301 280 134.7
D 7 60 990412 7348.98 301 280 134.7
D 15 74 908006 6737.34 301 280 134.7

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