ASTROSAT CZTI

Data Quality Report

Orbit 04550

Creation date: 2024-06-27T14:43:42.105423
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_233T10_9000000570_04550cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04550cztM0_level2_quad_clean.evt
Size (bytes)644,365,44086,990,400
Size614.5 MB 83.0 MB
Events in quadrant A7,679,257450,708
Events in quadrant B3,781,016565,429
Events in quadrant C3,685,721558,770
Events in quadrant D3,868,857545,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278102
B0160961
C0162801
D0169741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7366198927.002444%
B7366951.289709%
C7366781.058919%
D73661401.900624%

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 7610 7364 1063 1063 13.97% 14.44%
B 7610 7366 8 8 0.11% 0.11%
C 7611 7367 17 17 0.22% 0.23%
D 7611 7367 45 45 0.59% 0.61%

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 4357680 28601.69 730 713 152.3
A 0 118 321955 2108.82 730 713 152.3
A 15 234 59509 385.97 730 713 152.3
B 8 3 199974 1224.58 846 825 162.6
B 15 54 90216 549.67 846 825 162.6
B 4 80 81685 497.21 846 825 162.6
C 14 48 290781 1523.71 816 818 190.3
C 9 247 185374 969.81 816 818 190.3
C 8 128 8489 40.31 816 818 190.3
D 9 35 427744 2140.45 818 793 199.5
D 13 235 159909 797.7 818 793 199.5
D 2 136 81990 407.07 818 793 199.5

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