ASTROSAT CZTI

Data Quality Report

Orbit 40727

Creation date: 2024-06-27T22:19:41.148585
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/AS1A12_066T01_9000005562_40727cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40727cztM0_level2_quad_clean.evt
Size (bytes)95,967,36020,047,680
Size91.5 MB 19.1 MB
Events in quadrant A721,079135,898
Events in quadrant B673,093138,223
Events in quadrant C1,385,927123,936
Events in quadrant D670,253113,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028972
B028521
C049841
D028311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127330.235664%
B1273272.120974%
C127316212.725844%
D127314010.997643%

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 2586 1274 2 2 0.08% 0.16%
B 2586 1274 21 21 0.81% 1.65%
C 2586 1274 154 154 5.96% 12.09%
D 2586 1274 3 3 0.12% 0.24%

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 83 166330 5417.41 141 138 30.7
A 12 189 3903 122.73 141 138 30.7
A 13 254 1849 55.77 141 138 30.7
B 0 229 79446 2756.65 138 135 28.8
B 0 190 15825 545.34 138 135 28.8
B 5 255 15164 522.37 138 135 28.8
C 9 187 793153 23987.69 133 134 33.1
C 15 214 57137 1724.26 133 134 33.1
C 14 254 9204 274.35 133 134 33.1
D 12 191 44921 1318.02 132 128 34.0
D 2 250 39481 1157.95 132 128 34.0
D 1 47 24240 709.49 132 128 34.0

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