ASTROSAT CZTI

Data Quality Report

Orbit 50134

Creation date: 2025-01-04T19:02:20.659622
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/AS1C09_003T01_9000006442_50134cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50134cztM0_level2_quad_clean.evt
Size (bytes)1,427,417,28076,118,400
Size1.3 GB 72.6 MB
Events in quadrant A12,753,473532,977
Events in quadrant B6,283,729760,578
Events in quadrant C17,537,177124,546
Events in quadrant D15,638,933321,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0435901
B0244751
C0576451
D0520456

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8125262732.332308%
B81257499.218462%
C8125686184.443077%
D8124467157.496307%

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 8155 8126 2318 2318 28.42% 28.53%
B 8155 8126 467 467 5.73% 5.75%
C 8154 8125 5265 5265 64.57% 64.80%
D 8154 8125 4169 4169 51.13% 51.31%

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 98 2992399 15867.78 747 727 188.5
A 8 8 2360161 12514.4 747 727 188.5
A 6 250 2055205 10896.92 747 727 188.5
B 2 176 1026265 5960.23 813 785 172.1
B 4 170 785454 4560.61 813 785 172.1
B 4 206 372047 2157.83 813 785 172.1
C 4 111 6257692 60963.07 357 354 102.6
C 15 197 2835866 27625.41 357 354 102.6
C 15 213 2546311 24804.37 357 354 102.6
D 15 106 2975745 16707.2 619 596 178.1
D 15 168 1977426 11101.06 619 596 178.1
D 7 61 1618370 9084.75 619 596 178.1

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