ASTROSAT CZTI

Data Quality Report

Orbit 20250323_C07_001T03_9000006456_level2

Creation date: 2025-04-05T22:17:45.195766
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/AS1C07_001T03_9000006456cztM0_level2.fits modeM0/AS1C07_001T03_9000006456cztM0_level2_quad_clean.evt
Size (bytes)2,803,129,9203,890,620,800
Size2.6 GB 3.6 GB
Events in quadrant A17,022,38525,991,567
Events in quadrant B17,056,89230,107,316
Events in quadrant C10,514,26212,724,841
Events in quadrant D14,564,34423,418,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075890
B075850
C075250
D075860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014114770
B010105000
C021367300
D012949070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04250
B04150
C04250
D04250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3734863986410.673492%
B373878200095.351746%
C37313421222256.875546%
D3736084201711.246280%

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 697512 373069 0 0 0.00% 0.00%
B 697513 374151 0 0 0.00% 0.00%
C 697475 343355 0 0 0.00% 0.00%
D 697513 373380 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 17869 9.28 4498 4164 1477.2
A 9 255 17457 9.0 4498 4164 1477.2
A 14 95 14474 6.98 4498 4164 1477.2
B 2 245 13731 8.92 4540 4297 1057.9
B 3 25 13638 8.83 4540 4297 1057.9
B 9 173 13558 8.75 4540 4297 1057.9
C 15 255 8903 6.6 2833 2584 957.0
C 2 31 8409 6.09 2833 2584 957.0
C 7 221 8281 5.95 2833 2584 957.0
D 6 218 18760 10.74 4188 3718 1400.8
D 3 30 14449 7.66 4188 3718 1400.8
D 15 11 13250 6.8 4188 3718 1400.8

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