ASTROSAT CZTI

Data Quality Report

Orbit 12728

Creation date: 2024-06-27T16:31:41.749712
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/AS1G08_021T01_9000001880_12728cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12728cztM0_level2_quad_clean.evt
Size (bytes)568,670,400107,193,600
Size542.3 MB 102.2 MB
Events in quadrant A4,473,908701,421
Events in quadrant B4,698,625656,542
Events in quadrant C3,158,330702,333
Events in quadrant D4,391,681673,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183782
B0191021
C0148781
D0182591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73662733.706218%
B736676610.399131%
C7366540.733098%
D73661211.642683%

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 7697 7368 216 216 2.81% 2.93%
B 7697 7368 436 436 5.66% 5.92%
C 7697 7368 0 0 0.00% 0.00%
D 7697 7368 76 76 0.99% 1.03%

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 15 239 1290513 7728.01 822 804 166.9
A 12 189 10555 58.43 822 804 166.9
A 8 15 9282 50.8 822 804 166.9
B 4 239 1568370 10779.59 775 754 145.4
B 0 214 37350 251.65 775 754 145.4
B 12 111 17255 113.47 775 754 145.4
C 13 61 5870 27.03 808 811 187.1
C 12 4 2812 10.69 808 811 187.1
C 9 221 2636 9.75 808 811 187.1
D 1 52 758041 4048.26 792 770 187.1
D 10 199 182999 974.17 792 770 187.1
D 8 195 149046 792.66 792 770 187.1

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