ASTROSAT CZTI

Data Quality Report

Orbit 37283

Creation date: 2024-06-27T21:37:52.709771
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/AS1A10_094T16_9000005298_37283cztM0_level2.evt modeM0/AS1A10_094T16_9000005298_37283cztM0_level2_quad_clean.evt
Size (bytes)616,533,120128,756,160
Size588.0 MB 122.8 MB
Events in quadrant A3,463,541881,509
Events in quadrant B4,043,161881,883
Events in quadrant C3,661,953885,983
Events in quadrant D7,008,843742,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150661
B0169761
C0154261
D0258741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288190.260703%
B72881502.058178%
C7288390.535126%
D7288139819.182217%

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 8631 7289 8 8 0.09% 0.11%
B 8631 7289 108 108 1.25% 1.48%
C 8631 7289 30 30 0.35% 0.41%
D 8631 7289 1180 1180 13.67% 16.19%

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 254752 1562.15 809 792 162.6
A 9 143 35700 214.72 809 792 162.6
A 15 222 20602 121.85 809 792 162.6
B 5 172 397689 2606.81 796 773 152.3
B 0 213 307224 2012.66 796 773 152.3
B 0 189 63767 413.72 796 773 152.3
C 15 214 297312 1596.33 798 800 185.7
C 1 23 111765 597.4 798 800 185.7
C 14 254 78047 415.87 798 800 185.7
D 2 249 3478137 20006.15 708 688 173.8
D 13 249 641327 3685.67 708 688 173.8
D 2 250 36606 206.64 708 688 173.8

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