ASTROSAT CZTI

Data Quality Report

Orbit 07954

Creation date: 2024-06-27T15:25:58.313665
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/AS1G06_071T01_9000001088_07954cztM0_level2.evt modeM0/AS1G06_071T01_9000001088_07954cztM0_level2_quad_clean.evt
Size (bytes)490,250,88087,122,880
Size467.5 MB 83.1 MB
Events in quadrant A3,359,956550,168
Events in quadrant B3,438,053559,832
Events in quadrant C3,022,367552,970
Events in quadrant D4,575,423511,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145475
B0145582
C0135966
D01814530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66422243.372478%
B66432153.236490%
C66411251.882247%
D66364276.434599%

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 6943 6644 37 37 0.53% 0.56%
B 6943 6645 34 34 0.49% 0.51%
C 6943 6645 0 0 0.00% 0.00%
D 6943 6644 207 207 2.98% 3.12%

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 15 223 333578 2101.13 773 753 158.4
A 13 14 13198 78.57 773 753 158.4
A 3 1 11674 68.94 773 753 158.4
B 4 239 269606 1773.88 783 763 151.6
B 11 51 46077 298.99 783 763 151.6
B 10 16 34007 219.35 783 763 151.6
C 1 16 28911 158.08 763 767 178.0
C 14 67 12107 63.7 763 767 178.0
C 13 61 5750 27.99 763 767 178.0
D 1 52 1076530 5918.08 744 720 181.8
D 13 104 252299 1383.95 744 720 181.8
D 2 136 112333 613.99 744 720 181.8

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