ASTROSAT CZTI

Data Quality Report

Orbit 18206

Creation date: 2024-06-27T17:46:44.087281
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/AS1T03_003T01_9000002712_18206cztM0_level2.evt modeM0/AS1T03_003T01_9000002712_18206cztM0_level2_quad_clean.evt
Size (bytes)485,017,92096,920,640
Size462.5 MB 92.4 MB
Events in quadrant A3,341,787626,981
Events in quadrant B3,322,406638,292
Events in quadrant C3,204,311608,069
Events in quadrant D4,370,064599,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140712
B0139603
C0136532
D0173882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6633731.100558%
B6632831.251508%
C6632711.070567%
D66322794.206876%

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 7783 6634 12 12 0.15% 0.18%
B 7782 6633 17 17 0.22% 0.26%
C 7782 6633 0 0 0.00% 0.00%
D 7782 6633 190 190 2.44% 2.86%

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 146014 866.77 831 814 167.5
A 0 226 7459 39.67 831 814 167.5
A 12 194 6106 31.59 831 814 167.5
B 7 220 69491 440.81 824 804 155.8
B 0 197 22515 139.33 824 804 155.8
B 12 111 18405 112.96 824 804 155.8
C 14 238 123438 663.67 788 794 184.8
C 13 61 5669 26.38 788 794 184.8
C 3 233 5502 25.48 788 794 184.8
D 5 222 614514 3212.63 789 768 191.0
D 7 238 409765 2140.88 789 768 191.0
D 1 52 284724 1486.36 789 768 191.0

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