ASTROSAT CZTI

Data Quality Report

Orbit 46995

Creation date: 2024-06-27T23:30:29.261583
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/AS1C09_006T01_9000006294_46995cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46995cztM0_level2_quad_clean.evt
Size (bytes)770,065,92084,726,720
Size734.4 MB 80.8 MB
Events in quadrant A5,959,811682,199
Events in quadrant B13,253,810204,788
Events in quadrant C3,781,305660,737
Events in quadrant D5,036,234590,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218031
B0435791
C0152241
D0191381

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61182323.792089%
B6118485379.323308%
C61182664.347826%
D61195158.416408%

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 7229 6119 9 9 0.12% 0.15%
B 7229 6119 4247 4247 58.75% 69.41%
C 7229 6119 197 197 2.73% 3.22%
D 7230 6120 368 368 5.09% 6.01%

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 3090662 20859.23 715 702 148.1
A 9 191 85854 574.83 715 702 148.1
A 0 243 12267 78.07 715 702 148.1
B 3 112 11257948 116425.54 489 474 96.7
B 5 32 15805 158.55 489 474 96.7
B 0 198 15764 158.13 489 474 96.7
C 3 233 770957 4695.28 693 698 164.0
C 14 254 98577 596.64 693 698 164.0
C 1 3 67798 409.02 693 698 164.0
D 13 249 1314632 7666.37 684 664 171.4
D 1 52 876501 5110.09 684 664 171.4
D 2 249 90554 524.47 684 664 171.4

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