ASTROSAT CZTI

Data Quality Report

Orbit 27392

Creation date: 2024-06-27T19:39:39.838598
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/AS1T03_249T01_9000003934_27392cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27392cztM0_level2_quad_clean.evt
Size (bytes)499,887,36078,073,920
Size476.7 MB 74.5 MB
Events in quadrant A3,467,619478,790
Events in quadrant B3,521,845474,194
Events in quadrant C3,595,033453,971
Events in quadrant D4,061,621451,726

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148470
B0149530
C0152060
D0168500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7262360.495731%
B7262540.743597%
C72621091.500964%
D7262731.005233%

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 7662 7263 1 1 0.01% 0.01%
B 7662 7263 1 1 0.01% 0.01%
C 7662 7263 3 3 0.04% 0.04%
D 7662 7263 33 33 0.43% 0.45%

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 13 254 12036 61.11 898 876 182.6
A 3 137 8482 41.65 898 876 182.6
A 0 226 7769 37.75 898 876 182.6
B 12 111 20905 118.41 884 861 169.3
B 11 111 18998 107.14 884 861 169.3
B 14 111 16163 90.39 884 861 169.3
C 14 238 135493 666.82 852 855 201.9
C 2 16 128302 631.2 852 855 201.9
C 3 233 7349 32.16 852 855 201.9
D 1 52 371398 1794.19 868 845 206.5
D 2 250 208981 1007.78 868 845 206.5
D 14 49 108726 522.35 868 845 206.5

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