ASTROSAT CZTI

Data Quality Report

Orbit 25036

Creation date: 2024-06-27T19:13:00.564413
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/AS1A07_134T03_9000003670_25036cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25036cztM0_level2_quad_clean.evt
Size (bytes)1,443,876,480203,578,560
Size1.3 GB 194.1 MB
Events in quadrant A7,946,6141,277,572
Events in quadrant B8,082,9111,301,456
Events in quadrant C8,222,3681,254,314
Events in quadrant D18,361,2951,190,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341231
B0344861
C0345741
D0664381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165413932.375914%
B165424442.684077%
C165424812.907750%
D1654212097.308669%

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 17132 16543 0 0 0.00% 0.00%
B 17133 16544 7 7 0.04% 0.04%
C 17133 16544 1 1 0.01% 0.01%
D 17133 16544 749 749 4.37% 4.53%

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 11 208 32165 73.05 2053 2007 412.9
A 13 254 22141 48.77 2053 2007 412.9
A 3 137 19349 42.0 2053 2007 412.9
B 12 111 49249 120.89 2033 1981 391.0
B 0 190 48444 118.83 2033 1981 391.0
B 5 172 48343 118.58 2033 1981 391.0
C 14 238 311947 667.45 1974 1984 464.4
C 7 247 181855 387.32 1974 1984 464.4
C 0 239 19929 38.64 1974 1984 464.4
D 8 195 8127699 17022.9 1976 1920 477.3
D 1 52 2567905 5375.55 1976 1920 477.3
D 2 244 84540 173.08 1976 1920 477.3

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