ASTROSAT CZTI

Data Quality Report

Orbit 22094

Creation date: 2024-06-27T18:36:19.826684
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_007T05_9000003274_22094cztM0_level2.evt modeM0/AS1A07_007T05_9000003274_22094cztM0_level2_quad_clean.evt
Size (bytes)563,446,080107,314,560
Size537.3 MB 102.3 MB
Events in quadrant A3,553,388696,959
Events in quadrant B3,691,736705,311
Events in quadrant C3,766,670678,906
Events in quadrant D5,543,620646,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156492
B0159652
C0161183
D0216282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7491871.161394%
B74911171.561874%
C74901572.096128%
D74904155.540721%

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 7851 7492 3 3 0.04% 0.04%
B 7851 7492 4 4 0.05% 0.05%
C 7850 7491 5 5 0.06% 0.07%
D 7850 7491 255 255 3.25% 3.40%

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 15 174 29700 155.73 913 892 185.0
A 13 254 12812 64.44 913 892 185.0
A 0 226 7994 38.39 913 892 185.0
B 0 190 69811 397.36 908 884 173.5
B 3 64 30352 169.88 908 884 173.5
B 12 111 21146 116.81 908 884 173.5
C 0 239 192352 913.4 881 886 209.6
C 14 238 137293 650.74 881 886 209.6
C 13 61 6266 25.66 881 886 209.6
D 1 52 1876557 8771.27 878 853 213.8
D 2 16 99984 463.56 878 853 213.8
D 13 172 85530 395.97 878 853 213.8

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