ASTROSAT CZTI

Data Quality Report

Orbit 44961

Creation date: 2024-06-27T23:08:24.632592
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_017T02_9000006032_44961cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44961cztM0_level2_quad_clean.evt
Size (bytes)2,083,561,920381,493,440
Size1.9 GB 363.8 MB
Events in quadrant A18,939,8032,596,371
Events in quadrant B14,165,6682,643,219
Events in quadrant C11,437,0792,617,200
Events in quadrant D30,704,2322,014,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0753693
B0592283
C0515743
D01082453

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243814992.046676%
B243829153.752768%
C243811380.566015%
D24381451618.522620%

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 25901 24385 9 9 0.03% 0.04%
B 25902 24386 365 365 1.41% 1.50%
C 25901 24385 44 44 0.17% 0.18%
D 25901 24385 4001 4001 15.45% 16.41%

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 10 83 7979784 13722.95 2788 2722 581.3
A 13 248 73300 121.41 2788 2722 581.3
A 0 243 41885 67.37 2788 2722 581.3
B 4 171 1203181 2207.47 2763 2679 543.8
B 5 255 731559 1340.26 2763 2679 543.8
B 5 172 502186 918.49 2763 2679 543.8
C 12 250 389427 598.07 2754 2772 646.5
C 3 233 98767 148.48 2754 2772 646.5
C 14 254 90443 135.61 2754 2772 646.5
D 13 187 8438611 13073.93 2540 2461 645.3
D 12 33 5340768 8273.04 2540 2461 645.3
D 1 52 1560729 2414.93 2540 2461 645.3

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