ASTROSAT CZTI

Data Quality Report

Orbit 38389

Creation date: 2024-06-27T21:51:55.973805
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/AS1A12_005T08_9000005380_38389cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38389cztM0_level2_quad_clean.evt
Size (bytes)312,275,52095,325,120
Size297.8 MB 90.9 MB
Events in quadrant A2,920,767659,768
Events in quadrant B2,607,722667,506
Events in quadrant C2,588,671638,560
Events in quadrant D3,058,942576,598

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117132
B0107161
C0103671
D0120501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4918360.732005%
B4918190.386336%
C491870.142334%
D49181503.050020%

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 6981 4919 22 22 0.32% 0.45%
B 6981 4919 5 5 0.07% 0.10%
C 6981 4919 5 5 0.07% 0.10%
D 6981 4919 127 127 1.82% 2.58%

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 10 83 329780 2655.44 612 602 124.0
A 9 143 150784 1211.5 612 602 124.0
A 12 16 32137 254.39 612 602 124.0
B 0 183 128116 1129.16 601 588 112.9
B 4 21 27144 235.13 601 588 112.9
B 0 230 26814 232.21 601 588 112.9
C 15 214 207363 1497.77 594 598 138.0
C 2 16 53444 382.81 594 598 138.0
C 0 10 8962 60.59 594 598 138.0
D 12 241 230715 1636.88 591 577 140.6
D 10 118 220987 1567.69 591 577 140.6
D 12 233 90638 640.57 591 577 140.6

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