ASTROSAT CZTI

Data Quality Report

Orbit 23550

Creation date: 2024-06-27T18:56:02.222490
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/AS1A07_011T01_9000003482_23550cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23550cztM0_level2_quad_clean.evt
Size (bytes)452,664,000104,212,800
Size431.7 MB 99.4 MB
Events in quadrant A3,198,438690,243
Events in quadrant B3,407,633711,458
Events in quadrant C3,216,229666,681
Events in quadrant D3,455,567644,944

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132322
B0140302
C0134103
D0143862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342220.346894%
B6342630.993377%
C6341691.088156%
D6341240.378489%

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 7707 6343 0 0 0.00% 0.00%
B 7707 6343 11 11 0.14% 0.17%
C 7706 6341 3 3 0.04% 0.05%
D 7706 6342 6 6 0.08% 0.09%

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 13 252 25464 151.51 821 807 162.7
A 13 254 11185 63.77 821 807 162.7
A 0 226 7226 39.44 821 807 162.7
B 0 189 94921 628.51 815 797 149.8
B 15 32 42185 276.37 815 797 149.8
B 3 64 27706 179.68 815 797 149.8
C 14 238 127597 719.01 775 779 176.4
C 0 10 32657 180.73 775 779 176.4
C 7 247 13219 70.53 775 779 176.4
D 1 52 310502 1649.69 783 760 187.8
D 9 85 152494 808.14 783 760 187.8
D 2 234 25489 131.71 783 760 187.8

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