ASTROSAT CZTI

Data Quality Report

Orbit 04265

Creation date: 2024-06-27T14:39:33.970045
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_240T01_9000000536_04265cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04265cztM0_level2_quad_clean.evt
Size (bytes)35,576,6409,184,320
Size33.9 MB 8.8 MB
Events in quadrant A358,52279,467
Events in quadrant B36,9807,348
Events in quadrant C343,26979,364
Events in quadrant D292,57060,337

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06929
B06939
C06935
D06836

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B0100
C080
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069555408
B096039460
C067165139
D082526942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77410.129199%
B7211.388889%
C79010.126582%
D65610.152439%

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 7636 1545 0 0 0.00% 0.00%
B 7460 142 0 0 0.00% 0.00%
C 7635 1577 0 0 0.00% 0.00%
D 7181 1308 0 0 0.00% 0.00%

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 8 15 15811 792.93 87 86 19.8
A 0 50 3326 163.38 87 86 19.8
A 0 226 942 43.16 87 86 19.8
B 3 0 4752 1440.43 8 8 3.3
B 12 111 128 36.44 8 8 3.3
B 11 111 106 29.76 8 8 3.3
C 9 144 974 39.78 87 86 22.3
C 10 65 800 31.99 87 86 22.3
C 13 61 717 28.27 87 86 22.3
D 2 232 6768 346.68 71 69 19.3
D 13 239 5534 282.82 71 69 19.3
D 9 68 1572 77.78 71 69 19.3

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