ASTROSAT CZTI

Data Quality Report

Orbit 08708

Creation date: 2024-06-27T15:36:10.608990
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/AS1A03_052T01_9000001208_08708cztM0_level2.evt modeM0/AS1A03_052T01_9000001208_08708cztM0_level2_quad_clean.evt
Size (bytes)2,152,368,000366,543,360
Size2.0 GB 349.6 MB
Events in quadrant A15,000,4412,203,629
Events in quadrant B14,830,1012,279,094
Events in quadrant C14,447,8492,273,850
Events in quadrant D18,749,2782,151,589

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06440
C06440
D06440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660964
B0656794
C0654626
D0785984

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A319206331.983083%
B319206081.904762%
C319194101.284501%
D3192013594.257519%

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 33460 31921 20 20 0.06% 0.06%
B 33460 31921 4 4 0.01% 0.01%
C 33460 31921 2 2 0.01% 0.01%
D 33460 31921 790 790 2.36% 2.47%

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 13 251 306337 394.71 3747 3648 766.9
A 15 236 155911 198.55 3747 3648 766.9
A 15 174 103404 130.08 3747 3648 766.9
B 12 111 78586 104.14 3775 3682 719.3
B 11 111 63498 83.16 3775 3682 719.3
B 4 173 49998 64.39 3775 3682 719.3
C 12 4 29422 30.12 3684 3698 854.0
C 13 61 27660 28.06 3684 3698 854.0
C 8 128 17353 15.99 3684 3698 854.0
D 1 52 2876893 3213.14 3619 3534 894.3
D 7 71 1520466 1696.31 3619 3534 894.3
D 9 64 204666 224.92 3619 3534 894.3

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