ASTROSAT CZTI

Data Quality Report

Orbit 04616

Creation date: 2024-06-27T14:44:35.396377
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/AS1G05_154T01_9000000576_04616cztM0_level2.evt modeM0/AS1G05_154T01_9000000576_04616cztM0_level2_quad_clean.evt
Size (bytes)586,336,32075,648,960
Size559.2 MB 72.1 MB
Events in quadrant A3,169,876484,503
Events in quadrant B5,102,063462,137
Events in quadrant C3,118,791483,780
Events in quadrant D5,941,516422,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135933
B0192972
C0134542
D0219302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6275610.972112%
B627575111.968127%
C6275410.653386%
D627596915.442231%

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 7550 6276 10 10 0.13% 0.16%
B 7550 6276 556 556 7.36% 8.86%
C 7550 6276 7 7 0.09% 0.11%
D 7550 6276 1002 1002 13.27% 15.97%

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 15 174 127353 808.01 763 749 156.7
A 13 251 41846 262.29 763 749 156.7
A 8 15 37548 234.86 763 749 156.7
B 14 167 887573 6252.34 747 731 141.8
B 10 16 777550 5476.66 747 731 141.8
B 5 200 238527 1676.49 747 731 141.8
C 9 247 107824 618.48 741 746 173.1
C 14 48 92493 529.93 741 746 173.1
C 1 3 14499 79.44 741 746 173.1
D 13 235 2523365 15097.04 692 672 167.1
D 8 112 350291 2092.29 692 672 167.1
D 12 233 265677 1585.92 692 672 167.1

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