ASTROSAT CZTI

Data Quality Report

Orbit 31185

Creation date: 2024-06-27T20:24:27.447204
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_058T02_9000004510_31185cztM0_level2.evt modeM0/AS1A10_058T02_9000004510_31185cztM0_level2_quad_clean.evt
Size (bytes)695,171,520105,255,360
Size663.0 MB 100.4 MB
Events in quadrant A3,643,815690,698
Events in quadrant B6,267,497673,224
Events in quadrant C3,870,832659,153
Events in quadrant D6,759,923637,888

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158422
B0240652
C0163822
D0256002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7563620.819781%
B75643334.402433%
C75642853.767848%
D75643945.208884%

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 7923 7564 0 0 0.00% 0.00%
B 7924 7565 79 79 1.00% 1.04%
C 7924 7565 1 1 0.01% 0.01%
D 7924 7565 218 218 2.75% 2.88%

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 12 96 21351 107.64 938 919 189.8
A 13 254 13360 65.54 938 919 189.8
A 3 137 9903 47.33 938 919 189.8
B 6 159 2078608 11633.88 918 895 178.6
B 4 80 325613 1818.22 918 895 178.6
B 0 190 108470 602.35 918 895 178.6
C 14 238 176789 828.53 895 900 212.3
C 0 10 135739 635.16 895 900 212.3
C 14 254 48156 222.6 895 900 212.3
D 8 195 2834019 12338.92 881 864 229.6
D 12 218 254950 1106.59 881 864 229.6
D 12 79 103853 448.54 881 864 229.6

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