ASTROSAT CZTI

Data Quality Report

Orbit 42439

Creation date: 2024-06-27T22:40:11.507093
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/AS1C07_001T10_9000005806_42439cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42439cztM0_level2_quad_clean.evt
Size (bytes)1,122,880,320233,591,040
Size1.0 GB 222.8 MB
Events in quadrant A8,091,5391,646,678
Events in quadrant B14,495,2281,236,105
Events in quadrant C7,584,6391,620,598
Events in quadrant D10,178,9191,487,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340104
B0548625
C0331074
D0417694

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15677270.172227%
B15676382524.400357%
C156761601.020669%
D156765733.655269%

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 19856 15680 8 8 0.04% 0.05%
B 19855 15678 3244 3244 16.34% 20.69%
C 19855 15679 122 122 0.61% 0.78%
D 19855 15679 452 452 2.28% 2.88%

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 1490662 4389.31 1668 1632 339.2
A 2 79 46881 133.38 1668 1632 339.2
A 13 6 45221 128.49 1668 1632 339.2
B 0 186 8372364 31740.21 1380 1341 263.7
B 5 255 261921 988.03 1380 1341 263.7
B 3 112 237150 894.11 1380 1341 263.7
C 15 214 642797 1707.79 1620 1629 375.4
C 14 32 308855 818.31 1620 1629 375.4
C 14 254 175921 464.24 1620 1629 375.4
D 1 52 1394464 3559.16 1615 1569 391.4
D 2 16 465706 1185.98 1615 1569 391.4
D 13 171 444136 1130.86 1615 1569 391.4

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