ASTROSAT CZTI

Data Quality Report

Orbit 18776

Creation date: 2024-06-27T17:55:01.975844
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_088T03_9000002808_18776cztM0_level2.evt modeM0/AS1A05_088T03_9000002808_18776cztM0_level2_quad_clean.evt
Size (bytes)507,631,68081,322,560
Size484.1 MB 77.6 MB
Events in quadrant A4,457,307490,571
Events in quadrant B3,481,623513,976
Events in quadrant C3,236,002500,835
Events in quadrant D3,749,528495,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174431
B0145131
C0136141
D0155551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66223905.889459%
B66231261.902461%
C66231171.766571%
D66231932.914087%

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 7437 6623 236 236 3.17% 3.56%
B 7438 6624 15 15 0.20% 0.23%
C 7438 6624 0 0 0.00% 0.00%
D 7438 6624 73 73 0.98% 1.10%

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 6 16 1296485 7821.15 815 798 165.7
A 11 29 11884 66.92 815 798 165.7
A 13 254 10514 58.65 815 798 165.7
B 7 220 176327 1119.46 822 802 156.8
B 0 197 32452 201.86 822 802 156.8
B 0 229 21138 129.7 822 802 156.8
C 14 238 125732 669.27 796 800 186.7
C 0 207 5888 27.26 796 800 186.7
C 13 61 5653 26.0 796 800 186.7
D 14 34 376021 1908.9 807 782 196.6
D 1 52 190389 964.56 807 782 196.6
D 2 234 39890 198.95 807 782 196.6

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