ASTROSAT CZTI

Data Quality Report

Orbit 27200

Creation date: 2024-06-27T19:37:38.285942
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/AS1T03_243T01_9000003918_27200cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27200cztM0_level2_quad_clean.evt
Size (bytes)624,009,60088,479,360
Size595.1 MB 84.4 MB
Events in quadrant A3,301,264622,330
Events in quadrant B7,051,921431,555
Events in quadrant C3,272,463600,422
Events in quadrant D4,832,566571,343

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139180
B0253230
C0137810
D0187930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493691.062683%
B6493187428.861851%
C6493851.309102%
D64922333.589033%

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 7668 6495 2 2 0.03% 0.03%
B 7667 6490 1090 1090 14.22% 16.80%
C 7668 6495 0 0 0.00% 0.00%
D 7667 6494 202 202 2.63% 3.11%

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 13 248 31399 180.49 842 827 169.4
A 8 192 15627 87.37 842 827 169.4
A 13 254 10501 57.11 842 827 169.4
B 3 64 3596981 28635.65 670 655 125.6
B 0 189 733363 5834.17 670 655 125.6
B 5 172 20325 156.62 670 655 125.6
C 14 238 128838 673.73 802 807 190.0
C 14 225 15387 76.72 802 807 190.0
C 13 61 5483 24.61 802 807 190.0
D 1 52 777322 3784.44 792 777 205.2
D 2 250 359986 1750.58 792 777 205.2
D 7 38 292217 1420.31 792 777 205.2

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