ASTROSAT CZTI

Data Quality Report

Orbit 17804

Creation date: 2024-06-27T17:41:06.205141
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/AS1A05_015T01_9000002650_17804cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17804cztM0_level2_quad_clean.evt
Size (bytes)490,656,960107,565,120
Size467.9 MB 102.6 MB
Events in quadrant A3,174,586710,915
Events in quadrant B3,331,360739,769
Events in quadrant C3,322,594700,525
Events in quadrant D4,590,141653,516

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136702
B0140362
C0139652
D0180342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500310.476923%
B6500500.769231%
C6500871.338462%
D65004126.338462%

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 7850 6501 3 3 0.04% 0.05%
B 7850 6501 8 8 0.10% 0.12%
C 7850 6501 0 0 0.00% 0.00%
D 7850 6501 318 318 4.05% 4.89%

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 15 174 26212 155.19 818 804 163.7
A 0 226 7143 38.72 818 804 163.7
A 12 194 5813 30.59 818 804 163.7
B 0 230 47128 299.32 828 811 154.7
B 4 142 36702 231.94 828 811 154.7
B 12 111 17784 109.69 828 811 154.7
C 14 238 125048 678.3 792 800 183.2
C 5 218 57402 309.01 792 800 183.2
C 3 233 45535 244.22 792 800 183.2
D 7 238 1608980 8757.38 770 754 183.6
D 2 234 23804 125.52 770 754 183.6
D 7 96 22314 117.4 770 754 183.6

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