ASTROSAT CZTI

Data Quality Report

Orbit 36994

Creation date: 2024-06-27T21:34:00.206693
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/AS1A11_079T01_9000005254_36994cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36994cztM0_level2_quad_clean.evt
Size (bytes)579,674,88084,720,960
Size552.8 MB 80.8 MB
Events in quadrant A3,284,781545,330
Events in quadrant B6,581,582492,451
Events in quadrant C3,546,146548,216
Events in quadrant D3,696,019519,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138873
B0241042
C0144012
D0152922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596140.212250%
B6596104215.797453%
C6596460.697392%
D65961001.516070%

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 9642 6598 7 7 0.07% 0.11%
B 9642 6598 819 819 8.49% 12.41%
C 9642 6598 31 31 0.32% 0.47%
D 9642 6598 104 104 1.08% 1.58%

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 246550 1578.16 766 750 155.8
A 9 143 45767 289.03 766 750 155.8
A 7 16 19291 119.04 766 750 155.8
B 5 184 3443285 25096.35 710 691 137.2
B 4 81 83206 601.53 710 691 137.2
B 0 221 77040 556.58 710 691 137.2
C 15 214 282685 1614.44 746 753 174.6
C 14 254 90352 513.07 746 753 174.6
C 0 10 75676 429.04 746 753 174.6
D 12 17 210290 1158.24 741 723 180.9
D 1 52 180402 993.06 741 723 180.9
D 13 249 156121 858.86 741 723 180.9

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