ASTROSAT CZTI

Data Quality Report

Orbit 26709

Creation date: 2024-06-27T19:31:58.764112
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_9000003848_26709cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26709cztM0_level2_quad_clean.evt
Size (bytes)626,008,32079,980,480
Size597.0 MB 76.3 MB
Events in quadrant A3,582,428500,794
Events in quadrant B3,835,570503,667
Events in quadrant C4,570,866481,051
Events in quadrant D6,494,633446,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146720
B0155540
C0179510
D0241950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7025951.352313%
B70261001.423285%
C70262433.458582%
D70266669.479078%

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 7735 7026 4 4 0.05% 0.06%
B 7736 7027 3 3 0.04% 0.04%
C 7736 7027 34 34 0.44% 0.48%
D 7736 7027 504 504 6.51% 7.17%

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 28185 148.5 912 896 183.8
A 12 96 25163 132.06 912 896 183.8
A 13 254 12438 62.81 912 896 183.8
B 0 189 224186 1287.54 900 880 173.4
B 5 172 30058 168.24 900 880 173.4
B 3 112 26326 146.72 900 880 173.4
C 3 233 1018308 5030.24 862 869 202.3
C 14 238 139064 683.24 862 869 202.3
C 15 208 23547 112.12 862 869 202.3
D 7 80 2149036 10196.72 859 836 210.7
D 1 52 887003 4206.31 859 836 210.7
D 2 250 136123 642.16 859 836 210.7

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