ASTROSAT CZTI

Data Quality Report

Orbit 41118

Creation date: 2024-06-27T22:24:43.151986
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_052T04_9000005602_41118cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41118cztM0_level2_quad_clean.evt
Size (bytes)393,793,92097,125,120
Size375.6 MB 92.6 MB
Events in quadrant A3,174,514666,060
Events in quadrant B4,005,709640,148
Events in quadrant C2,905,297633,902
Events in quadrant D4,026,470583,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130163
B0160552
C0123902
D0159932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5975250.418410%
B59753776.309623%
C5975360.602510%
D59751833.062762%

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 7258 5976 9 9 0.12% 0.15%
B 7258 5976 267 267 3.68% 4.47%
C 7258 5976 34 34 0.47% 0.57%
D 7258 5976 157 157 2.16% 2.63%

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 540620 3975.98 658 643 135.8
A 2 79 57135 415.96 658 643 135.8
A 13 248 13599 95.4 658 643 135.8
B 0 245 1386898 11141.06 639 620 124.4
B 0 190 43175 342.0 639 620 124.4
B 15 32 29144 229.24 639 620 124.4
C 15 214 257278 1715.73 642 646 149.6
C 0 10 116730 776.09 642 646 149.6
C 14 254 12203 77.26 642 646 149.6
D 2 16 1061870 6807.95 639 621 155.9
D 2 249 232431 1487.07 639 621 155.9
D 13 249 196296 1255.26 639 621 155.9

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