ASTROSAT CZTI

Data Quality Report

Orbit 22774

Creation date: 2024-06-27T18:45:35.525250
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_168T01_9000003368_22774cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22774cztM0_level2_quad_clean.evt
Size (bytes)516,962,880146,802,240
Size493.0 MB 140.0 MB
Events in quadrant A3,614,8891,001,397
Events in quadrant B3,720,9701,006,176
Events in quadrant C3,668,456958,511
Events in quadrant D4,127,210943,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159332
B0161972
C0161532
D0175402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7725740.957929%
B77261091.410821%
C77261371.773233%
D77261121.449651%

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 7980 7727 0 0 0.00% 0.00%
B 7981 7728 1 1 0.01% 0.01%
C 7981 7728 14 14 0.18% 0.18%
D 7981 7728 38 38 0.48% 0.49%

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 10 17 26443 135.68 925 905 188.2
A 13 254 14420 71.8 925 905 188.2
A 14 235 10441 50.66 925 905 188.2
B 0 230 52297 294.69 921 901 174.4
B 12 111 19589 107.15 921 901 174.4
B 0 228 18131 98.79 921 901 174.4
C 14 238 137150 672.44 874 880 202.7
C 10 22 92031 449.79 874 880 202.7
C 2 16 14603 67.72 874 880 202.7
D 1 52 215768 995.46 886 859 215.9
D 2 152 214406 989.15 886 859 215.9
D 12 233 86042 394.57 886 859 215.9

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