ASTROSAT CZTI

Data Quality Report

Orbit 44272

Creation date: 2024-06-27T23:01:12.849512
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/AS1A13_077T01_9000005984_44272cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44272cztM0_level2_quad_clean.evt
Size (bytes)611,331,84099,878,400
Size583.0 MB 95.3 MB
Events in quadrant A9,799,176495,435
Events in quadrant B3,817,384755,413
Events in quadrant C3,304,983719,994
Events in quadrant D5,228,077621,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334631
B0155331
C0139131
D0198131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187238338.516244%
B61871702.747697%
C61881031.664512%
D61885649.114415%

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 7387 6189 2050 2050 27.75% 33.12%
B 7387 6189 35 35 0.47% 0.57%
C 7388 6190 30 30 0.41% 0.48%
D 7388 6190 373 373 5.05% 6.03%

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 15 223 5608776 40764.66 661 649 137.6
A 10 83 1394469 10131.47 661 649 137.6
A 13 248 155988 1129.14 661 649 137.6
B 0 219 121032 815.95 751 728 147.4
B 0 200 110379 743.7 751 728 147.4
B 4 173 95023 639.55 751 728 147.4
C 4 254 162988 927.79 741 748 174.9
C 14 254 108058 613.66 741 748 174.9
C 15 208 78313 443.56 741 748 174.9
D 1 52 1111428 6185.13 716 696 179.6
D 1 20 231170 1283.4 716 696 179.6
D 12 233 185794 1030.72 716 696 179.6

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