ASTROSAT CZTI

Data Quality Report

Orbit 20204

Creation date: 2024-06-27T18:12:24.135375
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/AS1A06_005T02_9000002996_20204cztM0_level2.evt modeM0/AS1A06_005T02_9000002996_20204cztM0_level2_quad_clean.evt
Size (bytes)445,685,76085,147,200
Size425.0 MB 81.2 MB
Events in quadrant A3,241,397542,773
Events in quadrant B3,418,928553,516
Events in quadrant C3,241,242520,937
Events in quadrant D3,155,486509,136

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135902
B0141062
C0135142
D0135942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480290.447531%
B6480470.725309%
C6480470.725309%
D6480310.478395%

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 7680 6481 6 6 0.08% 0.09%
B 7680 6481 8 8 0.10% 0.12%
C 7680 6481 0 0 0.00% 0.00%
D 7680 6481 10 10 0.13% 0.15%

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 4 2 39255 230.72 822 806 166.6
A 10 253 15680 89.25 822 806 166.6
A 14 238 11014 61.26 822 806 166.6
B 7 220 95567 606.22 829 809 156.3
B 0 198 18627 113.99 829 809 156.3
B 12 111 18299 111.89 829 809 156.3
C 14 238 125663 677.02 793 799 184.4
C 3 233 14634 75.01 793 799 184.4
C 13 61 5618 26.13 793 799 184.4
D 1 52 61073 310.69 798 775 194.1
D 11 176 24031 119.83 798 775 194.1
D 2 234 22975 114.39 798 775 194.1

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