ASTROSAT CZTI

Data Quality Report

Orbit 20221217_A12_077T06_9000005430_level2

Creation date: 2022-12-20T18:27:55.473101
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/AS1A12_077T06_9000005430cztM0_level2.fits modeM0/AS1A12_077T06_9000005430cztM0_level2_quad_clean.evt
Size (bytes)1,229,950,0801,328,581,440
Size1.1 GB 1.2 GB
Events in quadrant A6,639,2326,765,842
Events in quadrant B7,367,3008,600,329
Events in quadrant C7,450,0328,117,606
Events in quadrant D6,442,5807,422,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05150
B05150
C05150
D05150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05997010
B02807820
C03231760
D03781220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027800
B027800
C027800
D027800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1362053340224.523329%
B1362083980.292200%
C13620830532.241425%
D13620960794.462994%

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 192852 135970 0 0 0.00% 0.00%
B 192853 136200 0 0 0.00% 0.00%
C 192852 136114 0 0 0.00% 0.00%
D 192853 136130 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 9 19 5586 9.35 1733 1629 423.2
A 7 110 5515 9.18 1733 1629 423.2
A 0 29 5231 8.51 1733 1629 423.2
B 2 9 6515 12.16 1950 1856 383.1
B 3 80 5735 10.13 1950 1856 383.1
B 2 8 5222 8.79 1950 1856 383.1
C 1 81 6204 8.67 1972 1851 502.3
C 1 80 5907 8.08 1972 1851 502.3
C 3 202 5903 8.07 1972 1851 502.3
D 4 160 4732 6.28 1845 1685 485.1
D 7 3 4683 6.18 1845 1685 485.1
D 6 38 4561 5.93 1845 1685 485.1

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