ASTROSAT CZTI

Data Quality Report

Orbit 11650

Creation date: 2024-06-27T16:16:26.627836
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/AS1A04_037T01_9000001716_11650cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11650cztM0_level2_quad_clean.evt
Size (bytes)509,474,88081,878,400
Size485.9 MB 78.1 MB
Events in quadrant A4,183,213508,047
Events in quadrant B4,035,072519,960
Events in quadrant C3,223,225517,245
Events in quadrant D3,558,161491,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167953
B0159382
C0134382
D0144282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63341582.494474%
B63342293.615409%
C6334470.742027%
D6334681.073571%

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 7565 6336 48 48 0.63% 0.76%
B 7565 6336 78 78 1.03% 1.23%
C 7565 6336 0 0 0.00% 0.00%
D 7565 6336 30 30 0.40% 0.47%

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 5 515184 3135.34 819 805 164.1
A 1 162 191754 1163.91 819 805 164.1
A 1 178 112520 680.95 819 805 164.1
B 4 239 770545 4926.28 828 806 156.3
B 15 204 40332 252.96 828 806 156.3
B 12 111 17641 107.74 828 806 156.3
C 8 128 14123 70.78 820 826 187.9
C 8 112 5956 27.3 820 826 187.9
C 13 61 5906 27.04 820 826 187.9
D 1 52 207770 1085.21 807 789 190.7
D 13 104 129236 673.45 807 789 190.7
D 8 195 63518 328.89 807 789 190.7

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