ASTROSAT CZTI

Data Quality Report

Orbit 21495

Creation date: 2024-06-27T18:28:35.933814
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/AS1T03_141T01_9000003174_21495cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21495cztM0_level2_quad_clean.evt
Size (bytes)478,529,28093,588,480
Size456.4 MB 89.3 MB
Events in quadrant A3,428,967601,418
Events in quadrant B3,512,813613,735
Events in quadrant C3,465,140597,101
Events in quadrant D3,662,918587,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140040
B0142000
C0142820
D0146340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62271061.702264%
B62271231.975269%
C62271602.569456%
D62271011.621969%

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 7561 6226 0 0 0.00% 0.00%
B 7562 6227 0 0 0.00% 0.00%
C 7562 6227 0 0 0.00% 0.00%
D 7562 6227 19 19 0.25% 0.31%

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 13 254 9021 46.78 888 872 174.2
A 0 226 7791 39.72 888 872 174.2
A 15 48 7560 38.4 888 872 174.2
B 3 64 34708 208.86 877 858 162.1
B 0 230 24100 143.41 877 858 162.1
B 12 111 18360 107.99 877 858 162.1
C 14 238 136711 697.85 853 862 194.7
C 13 61 5924 26.0 853 862 194.7
C 3 202 2102 6.37 853 862 194.7
D 5 222 196943 859.14 863 851 228.2
D 7 38 92182 400.15 863 851 228.2
D 13 153 35595 152.22 863 851 228.2

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