ASTROSAT CZTI

Data Quality Report

Orbit 13954

Creation date: 2024-06-27T16:48:25.458874
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/AS1A04_225T01_9000002062_13954cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13954cztM0_level2_quad_clean.evt
Size (bytes)541,653,120114,955,200
Size516.6 MB 109.6 MB
Events in quadrant A3,470,309746,871
Events in quadrant B3,728,515783,902
Events in quadrant C3,627,146755,403
Events in quadrant D5,096,229700,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149323
B0156272
C0151322
D0198742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7098931.310228%
B70981301.831502%
C7098410.577628%
D70981902.676810%

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 9694 7101 1 1 0.01% 0.01%
B 9694 7101 13 13 0.13% 0.18%
C 9694 7101 0 0 0.00% 0.00%
D 9694 7101 67 67 0.69% 0.94%

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 24532 132.32 884 866 178.9
A 9 143 11866 61.5 884 866 178.9
A 1 178 8714 43.88 884 866 178.9
B 0 189 72847 429.62 901 879 167.5
B 3 64 37990 221.54 901 879 167.5
B 4 80 37491 218.56 901 879 167.5
C 3 233 214633 1071.11 874 880 199.6
C 13 61 6387 27.6 874 880 199.6
C 12 4 4294 17.11 874 880 199.6
D 13 122 724173 3317.87 848 830 218.0
D 12 110 373142 1707.74 848 830 218.0
D 1 52 294810 1348.44 848 830 218.0

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