ASTROSAT CZTI

Data Quality Report

Orbit 11234

Creation date: 2024-06-27T16:10:07.181288
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/AS1T01_200T01_9000001638_11234cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11234cztM0_level2_quad_clean.evt
Size (bytes)648,936,000124,689,600
Size618.9 MB 118.9 MB
Events in quadrant A6,492,663798,427
Events in quadrant B3,675,538851,543
Events in quadrant C3,961,407849,759
Events in quadrant D5,053,105792,078

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242393
B0157232
C0167722
D0196302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69566329.085681%
B69562123.047729%
C69562884.140311%
D69563865.549166%

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 7806 6957 417 417 5.34% 5.99%
B 7806 6957 24 24 0.31% 0.34%
C 7806 6957 170 170 2.18% 2.44%
D 7806 6957 264 264 3.38% 3.79%

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 8 5 1529923 9902.6 767 749 154.4
A 14 238 1005810 6508.56 767 749 154.4
A 15 174 780891 5052.03 767 749 154.4
B 4 239 332532 2222.31 794 774 149.3
B 10 244 106212 706.29 794 774 149.3
B 15 204 62949 416.49 794 774 149.3
C 4 254 939107 5285.4 770 771 177.5
C 1 3 12389 65.44 770 771 177.5
C 13 61 5737 27.97 770 771 177.5
D 8 195 775710 4332.77 749 729 178.9
D 1 52 569777 3181.44 749 729 178.9
D 10 253 383492 2139.95 749 729 178.9

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