ASTROSAT CZTI

Data Quality Report

Orbit 19639

Creation date: 2024-06-27T18:05:04.422317
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_101T08_9000002922_19639cztM0_level2.evt modeM0/AS1A05_101T08_9000002922_19639cztM0_level2_quad_clean.evt
Size (bytes)566,176,320104,356,800
Size539.9 MB 99.5 MB
Events in quadrant A3,275,146686,482
Events in quadrant B3,540,931705,254
Events in quadrant C3,335,898676,855
Events in quadrant D6,542,382626,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140192
B0148342
C0139982
D0240002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6675490.734082%
B6675781.168539%
C6676721.078490%
D667672610.874775%

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 8905 6677 9 9 0.10% 0.13%
B 8905 6677 24 24 0.27% 0.36%
C 8906 6678 0 0 0.00% 0.00%
D 8906 6678 663 663 7.44% 9.93%

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 5 16 76028 448.79 831 815 167.6
A 13 254 7098 37.49 831 815 167.6
A 0 226 6981 36.79 831 815 167.6
B 3 112 248695 1581.38 831 809 156.8
B 12 111 18818 114.89 831 809 156.8
B 11 111 15997 96.89 831 809 156.8
C 14 238 126346 661.09 811 819 189.9
C 3 233 40293 207.89 811 819 189.9
C 13 61 5651 25.45 811 819 189.9
D 7 238 2299134 12060.38 791 770 190.6
D 1 52 537105 2814.35 791 770 190.6
D 12 218 499411 2616.56 791 770 190.6

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