ASTROSAT CZTI

Data Quality Report

Orbit 33280

Creation date: 2024-06-27T20:47:00.469486
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/AS1T04_072T01_9000004780_33280cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33280cztM0_level2_quad_clean.evt
Size (bytes)563,454,72095,604,480
Size537.4 MB 91.2 MB
Events in quadrant A4,672,052641,314
Events in quadrant B3,942,433652,904
Events in quadrant C3,933,665626,328
Events in quadrant D4,183,461628,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171483
B0147942
C0147512
D0158592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493260312.226277%
B49324248.596918%
C49323356.792376%
D4932561.135442%

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 7055 4933 470 470 6.66% 9.53%
B 7055 4933 307 307 4.35% 6.22%
C 7055 4933 306 306 4.34% 6.20%
D 7055 4933 45 45 0.64% 0.91%

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 15 169 2112857 17398.83 613 603 121.4
A 12 16 155187 1273.32 613 603 121.4
A 12 194 26657 214.61 613 603 121.4
B 5 172 1307869 11434.05 606 593 114.3
B 5 200 86733 753.42 606 593 114.3
B 0 219 49367 426.6 606 593 114.3
C 1 23 1136963 8460.7 586 592 134.3
C 15 214 210544 1563.17 586 592 134.3
C 0 10 195835 1453.66 586 592 134.3
D 8 195 1300914 8059.38 611 600 161.3
D 7 223 107715 663.9 611 600 161.3
D 2 249 105863 652.42 611 600 161.3

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