ASTROSAT CZTI

Data Quality Report

Orbit 32717

Creation date: 2024-06-27T20:41:11.735938
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/AS1A10_123T04_9000004726_32717cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32717cztM0_level2_quad_clean.evt
Size (bytes)499,812,48064,520,640
Size476.7 MB 61.5 MB
Events in quadrant A4,689,179391,455
Events in quadrant B3,286,642407,730
Events in quadrant C2,982,753400,280
Events in quadrant D3,818,267381,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017588198
B01316280
C01245497
D015032143

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0241
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01102
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53004388.264151%
B5316611.147479%
C53131382.597403%
D53051482.789821%

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 7111 5346 336 336 4.73% 6.29%
B 7111 5347 31 31 0.44% 0.58%
C 7111 5347 123 123 1.73% 2.30%
D 7111 5346 100 100 1.41% 1.87%

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 15 249 2229539 18450.89 609 598 120.8
A 15 237 46516 380.1 609 598 120.8
A 7 16 14746 117.12 609 598 120.8
B 3 26 328380 2762.07 624 610 118.7
B 4 251 168331 1413.36 624 610 118.7
B 5 172 104182 872.79 624 610 118.7
C 0 10 553641 3985.26 602 606 138.8
C 3 233 28464 200.75 602 606 138.8
C 9 54 17647 122.8 602 606 138.8
D 2 249 440091 3031.84 600 587 145.0
D 2 250 292708 2015.15 600 587 145.0
D 7 80 229425 1578.6 600 587 145.0

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