ASTROSAT CZTI

Data Quality Report

Orbit 13306

Creation date: 2024-06-27T16:39:03.967240
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/AS1G08_023T01_9000001978_13306cztM0_level2.evt modeM0/AS1G08_023T01_9000001978_13306cztM0_level2_quad_clean.evt
Size (bytes)594,236,160133,079,040
Size566.7 MB 126.9 MB
Events in quadrant A4,161,280861,830
Events in quadrant B4,429,167882,666
Events in quadrant C4,090,247858,898
Events in quadrant D4,716,381814,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183682
B0190621
C0182881
D0202201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88251281.450425%
B88252673.025496%
C88251862.107649%
D88252222.515581%

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 9236 8827 0 0 0.00% 0.00%
B 9236 8827 21 21 0.23% 0.24%
C 9236 8827 0 0 0.00% 0.00%
D 9236 8827 78 78 0.84% 0.88%

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 1 162 40087 180.92 1062 1036 215.9
A 1 178 13807 59.17 1062 1036 215.9
A 1 161 12771 54.37 1062 1036 215.9
B 3 64 197620 961.67 1070 1040 204.4
B 0 214 24666 115.58 1070 1040 204.4
B 12 111 24322 113.9 1070 1040 204.4
C 13 61 7681 27.4 1046 1049 242.0
C 8 222 4153 12.82 1046 1049 242.0
C 14 234 3352 9.51 1046 1049 242.0
D 1 52 314490 1276.35 1024 995 245.6
D 13 249 277778 1126.89 1024 995 245.6
D 2 136 72385 290.66 1024 995 245.6

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