ASTROSAT CZTI

Data Quality Report

Orbit 33226

Creation date: 2024-06-27T20:46:20.341349
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_067T01_9000004774_33226cztM0_level2.evt modeM0/AS1A10_067T01_9000004774_33226cztM0_level2_quad_clean.evt
Size (bytes)624,709,44088,047,360
Size595.8 MB 84.0 MB
Events in quadrant A4,592,049565,583
Events in quadrant B4,440,734568,459
Events in quadrant C3,930,666563,356
Events in quadrant D5,554,291553,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178413
B0172252
C0156002
D0207282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593775812.767391%
B59373195.373084%
C59372384.008759%
D59373275.507832%

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 7250 5938 499 499 6.88% 8.40%
B 7250 5938 187 187 2.58% 3.15%
C 7250 5938 177 177 2.44% 2.98%
D 7250 5938 211 211 2.91% 3.55%

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 15 169 2018376 15107.8 661 648 133.6
A 13 6 13071 93.02 661 648 133.6
A 13 254 10339 72.56 661 648 133.6
B 4 170 847577 6405.79 682 664 132.2
B 5 172 570455 4309.73 682 664 132.2
B 5 31 113852 856.12 682 664 132.2
C 10 49 527580 3382.2 667 673 155.8
C 1 23 445298 2854.03 667 673 155.8
C 0 10 287559 1841.51 667 673 155.8
D 8 195 1517300 8626.33 656 641 175.8
D 12 3 368744 2093.67 656 641 175.8
D 10 203 353461 2006.74 656 641 175.8

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