ASTROSAT CZTI

Data Quality Report

Orbit 28938

Creation date: 2024-06-27T19:58:17.346135
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/AS1A10_082T04_9000004150_28938cztM0_level2.evt modeM0/AS1A10_082T04_9000004150_28938cztM0_level2_quad_clean.evt
Size (bytes)645,609,60089,222,400
Size615.7 MB 85.1 MB
Events in quadrant A3,347,201586,370
Events in quadrant B3,519,311598,401
Events in quadrant C3,361,754565,017
Events in quadrant D8,870,533485,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143241
B0148741
C0143521
D0309331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6693510.761990%
B66941912.853301%
C66943184.750523%
D6694217332.461906%

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 7533 6695 0 0 0.00% 0.00%
B 7534 6696 51 51 0.68% 0.76%
C 7534 6696 0 0 0.00% 0.00%
D 7534 6696 2063 2063 27.38% 30.81%

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 1 113 159879 978.12 808 793 162.6
A 5 98 65881 400.19 808 793 162.6
A 13 254 11481 65.71 808 793 162.6
B 10 245 349407 2264.22 801 783 154.0
B 12 111 18923 117.81 801 783 154.0
B 11 111 17359 107.66 801 783 154.0
C 14 238 189821 1057.9 762 766 178.7
C 14 254 100811 559.82 762 766 178.7
C 3 233 81409 451.26 762 766 178.7
D 8 195 4322481 26117.73 691 672 165.5
D 1 52 1914561 11566.09 691 672 165.5
D 2 234 22831 133.91 691 672 165.5

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