ASTROSAT CZTI

Data Quality Report

Orbit 04779

Creation date: 2024-06-27T14:46:52.709099
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_218T05_9000000602_04779cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04779cztM0_level2_quad_clean.evt
Size (bytes)659,776,32073,869,120
Size629.2 MB 70.4 MB
Events in quadrant A3,353,585464,058
Events in quadrant B3,123,682469,503
Events in quadrant C6,434,991430,455
Events in quadrant D6,615,836405,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147113
B0139412
C02381715
D0244316

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66962734.077061%
B6696180.268817%
C669397014.492754%
D6695104715.638536%

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 7526 6697 45 45 0.60% 0.67%
B 7526 6697 0 0 0.00% 0.00%
C 7526 6697 764 764 10.15% 11.41%
D 7526 6697 785 785 10.43% 11.72%

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 0 50 282932 1849.91 747 729 152.5
A 14 111 133819 872.44 747 729 152.5
A 8 15 34790 223.28 747 729 152.5
B 14 167 52696 355.95 766 747 145.9
B 4 80 51528 347.95 766 747 145.9
B 15 204 23047 152.8 766 747 145.9
C 14 48 3675653 22619.93 696 699 162.5
C 9 237 23758 141.93 696 699 162.5
C 1 16 13896 81.23 696 699 162.5
D 11 132 1985576 11786.11 690 669 168.4
D 13 235 1510297 8963.97 690 669 168.4
D 2 136 199029 1177.83 690 669 168.4

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