ASTROSAT CZTI

Data Quality Report

Orbit 47957

Creation date: 2024-08-10T14:07:47.104849
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_062T02_9000006384_47957cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47957cztM0_level2_quad_clean.evt
Size (bytes)495,377,280118,828,800
Size472.4 MB 113.3 MB
Events in quadrant A7,188,759769,809
Events in quadrant B3,435,028818,101
Events in quadrant C3,637,622776,093
Events in quadrant D3,497,238715,206

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264171
B0155411
C0162811
D0159771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74513234.334989%
B74521902.549651%
C74512212.966045%
D74511461.959469%

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 7576 7453 2 2 0.03% 0.03%
B 7577 7454 2 2 0.03% 0.03%
C 7576 7451 54 54 0.71% 0.72%
D 7576 7453 31 31 0.41% 0.42%

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 3859942 21752.53 846 825 177.4
A 0 31 56867 315.89 846 825 177.4
A 3 137 10124 52.42 846 825 177.4
B 0 198 29861 169.35 852 826 171.4
B 12 111 22363 125.62 852 826 171.4
B 11 111 20618 115.44 852 826 171.4
C 14 254 311271 1550.26 842 845 200.2
C 12 250 14121 66.3 842 845 200.2
C 14 67 12997 60.69 842 845 200.2
D 11 224 123114 565.99 853 826 216.1
D 2 234 35924 162.44 853 826 216.1
D 15 127 24875 111.31 853 826 216.1

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