ASTROSAT CZTI

Data Quality Report

Orbit 19980

Creation date: 2024-06-27T18:09:30.134380
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_082T09_9000002978_19980cztM0_level2.evt modeM0/AS1A05_082T09_9000002978_19980cztM0_level2_quad_clean.evt
Size (bytes)882,276,48077,140,800
Size841.4 MB 73.6 MB
Events in quadrant A14,943,336142,230
Events in quadrant B3,485,641579,196
Events in quadrant C3,939,692554,455
Events in quadrant D3,853,345546,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493861
B0150531
C0162691
D0166181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7352584179.447769%
B7352831.128945%
C73521131.536997%
D73521121.523395%

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 7666 7351 4803 4803 62.65% 65.34%
B 7667 7352 0 0 0.00% 0.00%
C 7667 7352 3 3 0.04% 0.04%
D 7667 7352 44 44 0.57% 0.60%

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 14 238 12999849 194460.55 325 318 66.8
A 14 254 643084 9615.16 325 318 66.8
A 14 237 45436 674.92 325 318 66.8
B 12 111 20988 118.21 879 856 170.3
B 11 111 18358 102.77 879 856 170.3
B 14 111 16242 90.34 879 856 170.3
C 3 233 415518 2080.59 849 856 199.3
C 14 238 132236 659.21 849 856 199.3
C 9 221 73977 366.89 849 856 199.3
D 1 52 467242 2230.0 856 831 209.2
D 12 218 113043 536.51 856 831 209.2
D 2 234 29783 138.42 856 831 209.2

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