ASTROSAT CZTI

Data Quality Report

Orbit 33974

Creation date: 2024-06-27T20:54:56.213968
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/AS1A11_034T07_9000004860_33974cztM0_level2.evt modeM0/AS1A11_034T07_9000004860_33974cztM0_level2_quad_clean.evt
Size (bytes)125,732,1604,772,160
Size119.9 MB 4.6 MB
Events in quadrant A1,882,1695,407
Events in quadrant B503,22525,766
Events in quadrant C639,88425,112
Events in quadrant D724,83823,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061342
B019361
C025101
D027381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A806806100.000000%
B806141.736973%
C806344.218362%
D8068510.545906%

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 806 806 624 624 77.42% 77.42%
B 806 806 5 5 0.62% 0.62%
C 806 806 24 24 2.98% 2.98%
D 806 806 76 76 9.43% 9.43%

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 15 169 1763901 233638.8 29 28 7.5
A 10 83 2080 271.8 29 28 7.5
A 13 6 640 81.06 29 28 7.5
B 5 172 37704 1630.0 111 109 23.1
B 4 232 25341 1093.98 111 109 23.1
B 3 112 3617 152.1 111 109 23.1
C 0 10 96944 3748.85 106 107 25.8
C 4 254 64706 2500.82 106 107 25.8
C 15 214 39804 1536.79 106 107 25.8
D 7 238 196742 7284.59 102 99 27.0
D 8 195 86991 3218.89 102 99 27.0
D 12 6 12900 474.21 102 99 27.0

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