ASTROSAT CZTI

Data Quality Report

Orbit 03957

Creation date: 2024-06-27T14:35:40.408553
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/AS1G05_246T02_9000000504_03957cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03957cztM0_level2_quad_clean.evt
Size (bytes)582,151,68088,580,160
Size555.2 MB 84.5 MB
Events in quadrant A4,694,520484,313
Events in quadrant B4,201,316486,900
Events in quadrant C3,806,856482,258
Events in quadrant D4,370,776659,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01905140
B01767834
C01724326
D01888039

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81975296.453581%
B81974465.441015%
C82023103.779566%
D81964695.722304%

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 8423 8215 51 51 0.61% 0.62%
B 8423 8213 4 4 0.05% 0.05%
C 8423 8215 0 0 0.00% 0.00%
D 8423 8215 90 90 1.07% 1.10%

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 0 118 317314 1542.68 988 966 205.1
A 8 15 316940 1540.86 988 966 205.1
A 2 79 157178 761.77 988 966 205.1
B 15 204 166749 848.13 999 972 195.5
B 4 81 63961 322.26 999 972 195.5
B 3 0 53021 266.29 999 972 195.5
C 1 16 23888 100.65 967 968 227.7
C 13 61 8024 30.98 967 968 227.7
C 9 144 2437 6.45 967 968 227.7
D 2 232 314075 1333.72 963 929 234.8
D 2 63 127889 540.74 963 929 234.8
D 10 246 78206 329.13 963 929 234.8

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