ASTROSAT CZTI

Data Quality Report

Orbit 31564

Creation date: 2024-06-27T20:30:00.558552
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_056T01_9000004598_31564cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31564cztM0_level2_quad_clean.evt
Size (bytes)1,495,166,400232,220,160
Size1.4 GB 221.5 MB
Events in quadrant A8,646,2871,471,379
Events in quadrant B14,475,0361,468,127
Events in quadrant C8,983,9901,414,853
Events in quadrant D11,921,2371,396,590

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379564
B0571385
C0384954
D0478174

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186012411.295629%
B186015032.704156%
C186013611.940756%
D186013872.080533%

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 20766 18601 0 0 0.00% 0.00%
B 20766 18601 52 52 0.25% 0.28%
C 20766 18601 0 0 0.00% 0.00%
D 20766 18602 129 129 0.62% 0.69%

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 13 254 34868 73.31 2240 2192 445.7
A 3 137 23680 48.21 2240 2192 445.7
A 0 226 18638 36.9 2240 2192 445.7
B 6 159 5012553 11773.96 2212 2152 425.5
B 4 80 299748 699.32 2212 2152 425.5
B 0 190 159088 368.78 2212 2152 425.5
C 14 238 342302 677.64 2137 2143 502.0
C 3 233 170727 335.84 2137 2143 502.0
C 4 175 50788 96.91 2137 2143 502.0
D 8 195 2719948 5322.55 2153 2088 510.6
D 7 223 476080 928.25 2153 2088 510.6
D 12 218 195843 379.44 2153 2088 510.6

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