ASTROSAT CZTI

Data Quality Report

Orbit 33247

Creation date: 2024-06-27T20:46:35.782425
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/AS1A11_046T01_9000004776_33247cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33247cztM0_level2_quad_clean.evt
Size (bytes)696,502,080102,790,080
Size664.2 MB 98.0 MB
Events in quadrant A8,651,659648,202
Events in quadrant B3,674,198721,650
Events in quadrant C2,634,195720,622
Events in quadrant D5,770,998645,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293303
B0142702
C0112682
D0209102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5366237044.166977%
B53663767.007082%
C5366400.745434%
D536661811.516959%

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 7189 5367 2040 2040 28.38% 38.01%
B 7189 5367 293 293 4.08% 5.46%
C 7189 5367 27 27 0.38% 0.50%
D 7189 5367 455 455 6.33% 8.48%

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 6368267 55049.8 585 576 115.7
A 13 6 12552 103.53 585 576 115.7
A 13 254 8181 65.75 585 576 115.7
B 5 172 870513 7532.75 619 604 115.5
B 15 85 111721 962.19 619 604 115.5
B 4 170 73971 635.3 619 604 115.5
C 0 10 153823 1097.55 614 618 139.6
C 3 233 21137 147.0 614 618 139.6
C 14 254 15228 104.66 614 618 139.6
D 8 195 1687401 11536.03 591 575 146.2
D 12 3 1066887 7292.4 591 575 146.2
D 10 118 183386 1250.23 591 575 146.2

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