ASTROSAT CZTI

Data Quality Report

Orbit 20180913_C03_015T03_9000002366_level2

Creation date: 2025-11-24T17:13:00.043719
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/AS1C03_015T03_9000002366cztM0_level2.fits modeM0/AS1C03_015T03_9000002366cztM0_level2_quad_clean.evt
Size (bytes)134,484,480183,634,560
Size128.3 MB 175.1 MB
Events in quadrant A800,6581,169,785
Events in quadrant B774,6441,182,281
Events in quadrant C789,6821,141,987
Events in quadrant D695,7381,055,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303120
B0317140
C0301480
D0307900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14664470.320513%
B146641981.350245%
C146641050.716039%
D14664520.354610%

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 15235 14664 0 0 0.00% 0.00%
B 15235 14663 0 0 0.00% 0.00%
C 15235 14664 0 0 0.00% 0.00%
D 15235 14663 0 0 0.00% 0.00%

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 0 29 775 10.81 208 196 53.6
A 7 110 650 8.48 208 196 53.6
A 15 236 612 7.77 208 196 53.6
B 2 9 681 11.23 204 195 43.3
B 3 17 539 7.95 204 195 43.3
B 2 8 536 7.88 204 195 43.3
C 12 241 560 6.63 208 195 55.0
C 3 126 553 6.5 208 195 55.0
C 9 233 544 6.34 208 195 55.0
D 6 231 514 6.09 198 180 54.9
D 6 38 511 6.03 198 180 54.9
D 10 189 503 5.89 198 180 54.9

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