ASTROSAT CZTI

Data Quality Report

Orbit 20170605_G07_028T01_9000001272_level2

Creation date: 2025-11-14T00:20:45.287642
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_028T01_9000001272cztM0_level2.fits modeM0/AS1G07_028T01_9000001272cztM0_level2_quad_clean.evt
Size (bytes)148,374,720129,885,120
Size141.5 MB 123.9 MB
Events in quadrant A884,046737,416
Events in quadrant B866,696743,743
Events in quadrant C880,206700,059
Events in quadrant D759,058647,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420000
B0330730
C0361950
D0408990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159883322.076557%
B15998990.618827%
C159891200.750516%
D159924582.863932%

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 19041 16006 0 0 0.00% 0.00%
B 19041 16008 0 0 0.00% 0.00%
C 19041 16005 0 0 0.00% 0.00%
D 19041 16008 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 14 188 885 11.32 229 215 59.2
A 0 29 875 11.15 229 215 59.2
A 14 204 797 9.83 229 215 59.2
B 2 9 732 10.68 228 217 48.2
B 5 232 624 8.44 228 217 48.2
B 12 226 586 7.65 228 217 48.2
C 9 188 607 6.19 232 214 63.5
C 9 242 588 5.89 232 214 63.5
C 7 111 578 5.73 232 214 63.5
D 3 31 554 6.12 215 196 58.5
D 3 14 541 5.89 215 196 58.5
D 10 189 539 5.86 215 196 58.5

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