ASTROSAT CZTI

Data Quality Report

Orbit 21651

Creation date: 2024-06-27T18:30:39.954711
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/AS1A06_002T02_9000003206_21651cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21651cztM0_level2_quad_clean.evt
Size (bytes)456,212,16094,826,880
Size435.1 MB 90.4 MB
Events in quadrant A3,016,626612,939
Events in quadrant B3,426,274632,592
Events in quadrant C3,105,819604,053
Events in quadrant D3,832,058574,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132362
B0143732
C0133912
D0157482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6414200.311818%
B6414500.779545%
C6414500.779545%
D6414871.356408%

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 7589 6415 0 0 0.00% 0.00%
B 7589 6415 16 16 0.21% 0.25%
C 7589 6415 0 0 0.00% 0.00%
D 7589 6415 44 44 0.58% 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 8383 48.59 782 768 156.7
A 0 226 6678 37.71 782 768 156.7
A 3 137 6396 35.91 782 768 156.7
B 3 64 185224 1246.8 787 767 147.9
B 0 230 32442 214.1 787 767 147.9
B 0 197 31238 205.96 787 767 147.9
C 14 238 118745 661.74 761 764 178.3
C 10 22 12373 65.11 761 764 178.3
C 9 54 6367 31.43 761 764 178.3
D 7 238 612719 3331.57 759 738 183.7
D 2 136 98860 534.17 759 738 183.7
D 13 153 79875 430.81 759 738 183.7

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