ASTROSAT CZTI

Data Quality Report

Orbit 18547

Creation date: 2024-06-27T17:51:26.619679
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_188T01_9000002756_18547cztM0_level2.evt modeM0/AS1A05_188T01_9000002756_18547cztM0_level2_quad_clean.evt
Size (bytes)686,704,32083,900,160
Size654.9 MB 80.0 MB
Events in quadrant A8,726,468484,418
Events in quadrant B3,434,663541,770
Events in quadrant C3,421,276512,432
Events in quadrant D4,720,593493,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309347
B0150551
C0150391
D0191251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7293177324.310983%
B72931041.426025%
C72931371.878514%
D72932573.523927%

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 7533 7293 1378 1378 18.29% 18.89%
B 7533 7294 5 5 0.07% 0.07%
C 7533 7293 7 7 0.09% 0.10%
D 7533 7294 164 164 2.18% 2.25%

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 0 13 5670612 35242.14 788 772 160.9
A 13 254 11055 63.91 788 772 160.9
A 14 111 9135 51.98 788 772 160.9
B 4 80 29439 170.87 866 842 167.4
B 3 64 22305 128.24 866 842 167.4
B 12 111 20303 116.28 866 842 167.4
C 14 238 128961 656.22 830 834 195.2
C 9 54 54484 274.78 830 834 195.2
C 13 61 5836 25.62 830 834 195.2
D 7 238 1355216 6650.66 831 806 203.7
D 1 52 213036 1042.13 831 806 203.7
D 2 234 32934 157.76 831 806 203.7

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