ASTROSAT CZTI

Data Quality Report

Orbit 51614

Creation date: 2025-04-15T11:09:15.639280
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/AS1A13_037T05_9000006460_51614cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51614cztM0_level2_quad_clean.evt
Size (bytes)558,345,600102,496,320
Size532.5 MB 97.7 MB
Events in quadrant A5,533,035647,810
Events in quadrant B5,045,197710,422
Events in quadrant C4,325,852650,495
Events in quadrant D5,205,627593,694

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213332
B0198562
C0180152
D0206962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71985477.599333%
B71984886.779661%
C71982543.528758%
D71984626.418450%

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 7818 7198 412 412 5.27% 5.72%
B 7818 7198 258 258 3.30% 3.58%
C 7818 7198 173 173 2.21% 2.40%
D 7818 7199 433 433 5.54% 6.01%

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 4 175 1242211 6472.9 790 772 191.8
A 12 3 406013 2112.94 790 772 191.8
A 12 250 197085 1023.58 790 772 191.8
B 1 223 479046 2842.5 783 756 168.3
B 5 185 324820 1925.93 783 756 168.3
B 5 172 287644 1704.99 783 756 168.3
C 0 209 703586 3349.93 769 763 209.8
C 13 3 239085 1135.94 769 763 209.8
C 12 112 152594 723.68 769 763 209.8
D 15 174 535217 2571.83 756 730 207.8
D 1 3 443069 2128.43 756 730 207.8
D 8 176 335971 1613.1 756 730 207.8

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