ASTROSAT CZTI

Data Quality Report

Orbit 25348

Creation date: 2024-06-27T19:16:38.291604
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_059T01_9000003706_25348cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25348cztM0_level2_quad_clean.evt
Size (bytes)511,162,560107,856,000
Size487.5 MB 102.9 MB
Events in quadrant A3,706,909717,022
Events in quadrant B3,423,920717,331
Events in quadrant C3,368,816687,336
Events in quadrant D4,522,188673,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156790
B0143250
C0140780
D0179780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6766821.211942%
B6767851.256096%
C67671261.861977%
D67661602.364765%

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 7546 6767 0 0 0.00% 0.00%
B 7547 6768 0 0 0.00% 0.00%
C 7547 6768 1 1 0.01% 0.01%
D 7546 6766 60 60 0.80% 0.89%

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 15 173 410258 2416.94 855 838 169.4
A 13 254 9776 52.76 855 838 169.4
A 3 137 7610 39.98 855 838 169.4
B 3 112 69362 429.4 842 821 159.6
B 12 111 19044 114.16 842 821 159.6
B 0 190 18247 109.17 842 821 159.6
C 14 238 131132 683.63 822 827 190.6
C 7 87 11432 55.64 822 827 190.6
C 9 54 10263 49.5 822 827 190.6
D 8 195 583909 2911.67 834 810 200.3
D 1 52 388925 1938.03 834 810 200.3
D 12 233 120599 598.16 834 810 200.3

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