ASTROSAT CZTI

Data Quality Report

Orbit 20170417_G07_027T01_9000001180_level2

Creation date: 2025-11-11T20:35:42.551484
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/AS1G07_027T01_9000001180cztM0_level2.fits modeM0/AS1G07_027T01_9000001180cztM0_level2_quad_clean.evt
Size (bytes)135,950,400159,341,760
Size129.7 MB 152.0 MB
Events in quadrant A815,060986,845
Events in quadrant B780,442978,700
Events in quadrant C803,016957,303
Events in quadrant D695,652879,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306100
B0325260
C0301020
D0324660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14820590.398111%
B148201120.755735%
C14820350.236167%
D148201631.099865%

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 17265 14820 0 0 0.00% 0.00%
B 17265 14820 0 0 0.00% 0.00%
C 17265 14819 0 0 0.00% 0.00%
D 17265 14817 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 14 188 825 11.09 211 197 56.6
A 0 29 738 9.56 211 197 56.6
A 14 204 682 8.57 211 197 56.6
B 2 9 659 10.55 206 195 44.0
B 12 226 558 8.25 206 195 44.0
B 14 254 540 7.84 206 195 44.0
C 12 241 575 6.54 212 195 58.1
C 2 191 567 6.4 212 195 58.1
C 3 126 542 5.97 212 195 58.1
D 3 31 514 6.12 197 179 54.8
D 11 82 507 5.99 197 179 54.8
D 10 113 507 5.99 197 179 54.8

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