ASTROSAT CZTI

Data Quality Report

Orbit 26864

Creation date: 2024-06-27T19:33:48.486523
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/AS1A09_145T01_9000003870_26864cztM0_level2.evt modeM0/AS1A09_145T01_9000003870_26864cztM0_level2_quad_clean.evt
Size (bytes)508,466,880119,626,560
Size484.9 MB 114.1 MB
Events in quadrant A3,648,363809,973
Events in quadrant B3,462,668844,656
Events in quadrant C3,329,863787,649
Events in quadrant D4,539,190749,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146500
B0140870
C0136680
D0176140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61741011.635892%
B6174510.826045%
C6174711.149984%
D61744927.968902%

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 7534 6175 42 42 0.56% 0.68%
B 7534 6175 7 7 0.09% 0.11%
C 7534 6175 0 0 0.00% 0.00%
D 7534 6174 412 412 5.47% 6.67%

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 397891 2361.34 843 831 168.2
A 13 254 10443 57.16 843 831 168.2
A 3 137 7259 38.23 843 831 168.2
B 10 246 52241 320.67 856 838 160.3
B 15 33 31287 189.95 856 838 160.3
B 0 190 25011 150.8 856 838 160.3
C 14 238 136020 709.92 818 828 190.4
C 2 16 7475 34.9 818 828 190.4
C 13 61 5554 24.82 818 828 190.4
D 7 80 1104965 6065.16 774 762 182.1
D 2 250 250292 1370.62 774 762 182.1
D 11 176 154453 844.19 774 762 182.1

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