ASTROSAT CZTI

Data Quality Report

Orbit 26865

Creation date: 2024-06-27T19:33:49.275315
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/AS1A09_145T01_9000003870_26865cztM0_level2.evt modeM0/AS1A09_145T01_9000003870_26865cztM0_level2_quad_clean.evt
Size (bytes)388,802,88077,028,480
Size370.8 MB 73.5 MB
Events in quadrant A2,660,150508,642
Events in quadrant B2,607,042527,642
Events in quadrant C2,563,946492,225
Events in quadrant D3,617,196467,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107440
B0105270
C0104460
D0139210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4800571.187500%
B4800591.229167%
C4801661.374714%
D48013938.185795%

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 4800 4800 10 10 0.21% 0.21%
B 4799 4799 1 1 0.02% 0.02%
C 4801 4801 1 1 0.02% 0.02%
D 4801 4801 295 295 6.14% 6.14%

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 13 130353 989.91 655 645 131.0
A 13 254 7786 54.5 655 645 131.0
A 12 96 6593 45.39 655 645 131.0
B 12 111 14066 109.41 658 646 122.7
B 15 33 12986 100.6 658 646 122.7
B 11 111 12438 96.14 658 646 122.7
C 14 238 104054 704.18 628 635 146.9
C 15 208 9748 62.05 628 635 146.9
C 13 61 4478 26.17 628 635 146.9
D 7 80 1171605 8233.13 601 591 142.2
D 11 176 85203 594.89 601 591 142.2
D 2 250 49595 344.54 601 591 142.2

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