ASTROSAT CZTI

Data Quality Report

Orbit 29836

Creation date: 2024-06-27T20:08:11.696614
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_291T01_9000004278_29836cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29836cztM0_level2_quad_clean.evt
Size (bytes)645,053,760103,962,240
Size615.2 MB 99.1 MB
Events in quadrant A3,680,953690,298
Events in quadrant B5,531,869693,661
Events in quadrant C3,571,101656,443
Events in quadrant D6,274,980617,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152832
B0213442
C0149962
D0233262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7045761.078779%
B70451271.802697%
C70451111.575586%
D70457049.992903%

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 7690 7046 23 23 0.30% 0.33%
B 7690 7046 1 1 0.01% 0.01%
C 7690 7046 19 19 0.25% 0.27%
D 7689 7045 611 611 7.95% 8.67%

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 14 238 261709 1481.62 879 864 176.1
A 13 254 13574 72.19 879 864 176.1
A 15 174 11930 62.86 879 864 176.1
B 6 159 2076645 12513.44 873 852 165.9
B 12 111 20184 116.54 873 852 165.9
B 11 111 18252 104.89 873 852 165.9
C 10 22 141565 717.12 835 841 196.2
C 14 238 138949 703.79 835 841 196.2
C 3 233 19958 97.42 835 841 196.2
D 7 80 2576847 13482.67 809 789 191.1
D 8 195 524243 2739.67 809 789 191.1
D 2 250 65291 337.59 809 789 191.1

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