ASTROSAT CZTI

Data Quality Report

Orbit 25465

Creation date: 2024-06-27T19:17:58.393884
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_085T02_9000003716_25465cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25465cztM0_level2_quad_clean.evt
Size (bytes)554,696,64098,853,120
Size529.0 MB 94.3 MB
Events in quadrant A3,369,280647,072
Events in quadrant B3,360,983646,937
Events in quadrant C3,442,042621,613
Events in quadrant D6,154,061592,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144420
B0144070
C0147290
D0230180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965971.392678%
B69651201.722900%
C69661391.995406%
D69665547.952914%

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 7290 6966 0 0 0.00% 0.00%
B 7290 6966 0 0 0.00% 0.00%
C 7291 6967 4 4 0.05% 0.06%
D 7291 6967 438 438 6.01% 6.29%

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 10888 57.31 872 850 175.1
A 3 137 7972 40.66 872 850 175.1
A 0 226 7601 38.54 872 850 175.1
B 12 111 20205 117.82 856 835 164.4
B 11 111 18261 105.99 856 835 164.4
B 14 111 16635 96.1 856 835 164.4
C 14 238 131941 679.8 824 828 192.9
C 9 54 92650 476.08 824 828 192.9
C 13 61 5766 25.6 824 828 192.9
D 1 52 1068296 5373.05 823 800 198.7
D 7 238 1038034 5220.73 823 800 198.7
D 8 195 602222 3027.15 823 800 198.7

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