ASTROSAT CZTI

Data Quality Report

Orbit 20240604_A13_071T07_9000006290_level2

Creation date: 2024-06-08T13:05:32.173308
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/AS1A13_071T07_9000006290cztM0_level2.fits modeM0/AS1A13_071T07_9000006290cztM0_level2_quad_clean.evt
Size (bytes)606,890,880877,357,440
Size578.8 MB 836.7 MB
Events in quadrant A3,564,7825,796,908
Events in quadrant B3,308,5865,266,060
Events in quadrant C3,624,8745,685,452
Events in quadrant D3,032,6764,983,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014300
B014300
C014300
D014300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02496760
B02627030
C01507180
D02041880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7060124143.419215%
B706071004114.220970%
C706065770.817211%
D7060847786.766939%

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 91735 70605 0 0 0.00% 0.00%
B 91736 70599 0 0 0.00% 0.00%
C 91736 70605 0 0 0.00% 0.00%
D 91735 70567 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 7 110 2865 8.33 929 867 239.8
A 14 95 2754 7.87 929 867 239.8
A 0 29 2626 7.34 929 867 239.8
B 2 9 3130 13.64 874 835 168.3
B 2 8 2501 9.9 874 835 168.3
B 3 17 2343 8.96 874 835 168.3
C 3 202 2784 7.54 959 893 250.8
C 3 203 2735 7.34 959 893 250.8
C 1 81 2730 7.32 959 893 250.8
D 10 189 2234 5.97 869 790 241.9
D 10 113 2192 5.8 869 790 241.9
D 6 38 2189 5.78 869 790 241.9

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