ASTROSAT CZTI

Data Quality Report

Orbit 10948

Creation date: 2024-06-27T16:06:06.615193
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/AS1G08_037T01_9000001588_10948cztM0_level2.evt modeM0/AS1G08_037T01_9000001588_10948cztM0_level2_quad_clean.evt
Size (bytes)611,504,64086,348,160
Size583.2 MB 82.3 MB
Events in quadrant A6,734,210524,280
Events in quadrant B4,195,095553,787
Events in quadrant C3,006,470552,000
Events in quadrant D4,115,876502,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248382
B0170151
C0139601
D0172051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69106509.406657%
B69102403.473227%
C691020.028944%
D69103985.759768%

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 7305 6910 414 414 5.67% 5.99%
B 7305 6911 135 135 1.85% 1.95%
C 7305 6911 0 0 0.00% 0.00%
D 7305 6911 241 241 3.30% 3.49%

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 8 5 2113826 13579.75 763 746 155.6
A 8 15 1305708 8386.36 763 746 155.6
A 14 238 229216 1468.27 763 746 155.6
B 4 239 928534 6038.11 791 771 153.7
B 0 219 61184 393.18 791 771 153.7
B 0 214 37103 236.46 791 771 153.7
C 13 61 5822 28.14 767 770 179.6
C 5 37 4581 21.22 767 770 179.6
C 8 222 4200 19.1 767 770 179.6
D 13 152 835820 4648.3 739 718 179.7
D 5 222 215374 1194.81 739 718 179.7
D 1 52 88439 488.27 739 718 179.7

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