ASTROSAT CZTI

Data Quality Report

Orbit 04770

Creation date: 2024-06-27T14:46:45.459855
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/AS1G05_218T05_9000000602_04770cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04770cztM0_level2_quad_clean.evt
Size (bytes)440,040,96059,806,080
Size419.7 MB 57.0 MB
Events in quadrant A2,319,133384,781
Events in quadrant B2,500,417379,211
Events in quadrant C5,281,210322,622
Events in quadrant D2,879,021366,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01062
B01066
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010606126
B010997165
C019790355
D012424201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51091122.192210%
B50911212.376743%
C5088118023.191824%
D50901603.143418%

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 5556 5159 0 0 0.00% 0.00%
B 5556 5156 1 1 0.02% 0.02%
C 5556 5153 864 864 15.55% 16.77%
D 5556 5148 38 38 0.68% 0.74%

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 8 15 24051 192.5 589 574 122.0
A 7 16 13173 103.3 589 574 122.0
A 3 1 6857 51.52 589 574 122.0
B 4 80 139771 1199.46 591 574 116.0
B 14 167 30989 262.09 591 574 116.0
B 15 54 20650 173.0 591 574 116.0
C 14 48 3273601 27085.21 512 514 120.8
C 12 4 5754 43.36 512 514 120.8
C 13 61 4128 29.91 512 514 120.8
D 13 235 433152 3110.74 567 549 139.1
D 2 136 118988 851.66 567 549 139.1
D 13 239 42954 304.92 567 549 139.1

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