ASTROSAT CZTI

Data Quality Report

Orbit 33486

Creation date: 2024-06-27T20:49:22.204920
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/AS1A11_060T01_9000004804_33486cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33486cztM0_level2_quad_clean.evt
Size (bytes)588,778,56082,915,200
Size561.5 MB 79.1 MB
Events in quadrant A2,881,246541,688
Events in quadrant B4,783,426520,555
Events in quadrant C3,511,042534,780
Events in quadrant D6,226,794471,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126933
B0182552
C0142082
D0227042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632560.094862%
B63255678.964427%
C6325630.996047%
D632563810.086957%

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 9161 6327 0 0 0.00% 0.00%
B 9161 6327 446 446 4.87% 7.05%
C 9161 6327 42 42 0.46% 0.66%
D 9161 6327 631 631 6.89% 9.97%

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 10383 64.83 743 728 148.9
A 3 137 7418 44.92 743 728 148.9
A 13 6 6532 38.97 743 728 148.9
B 5 172 1497776 10873.5 714 695 137.7
B 0 213 254752 1845.25 714 695 137.7
B 5 255 83744 603.2 714 695 137.7
C 15 214 271829 1615.83 723 730 167.8
C 1 23 160699 953.46 723 730 167.8
C 0 10 143700 852.14 723 730 167.8
D 8 195 1419202 8373.43 691 672 169.4
D 12 6 908053 5356.17 691 672 169.4
D 2 250 874528 5158.28 691 672 169.4

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