ASTROSAT CZTI

Data Quality Report

Orbit 21862

Creation date: 2024-06-27T18:33:11.502634
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/AS1A07_118T01_9000003232_21862cztM0_level2.evt modeM0/AS1A07_118T01_9000003232_21862cztM0_level2_quad_clean.evt
Size (bytes)662,509,44092,592,000
Size631.8 MB 88.3 MB
Events in quadrant A4,092,385557,439
Events in quadrant B4,457,979568,798
Events in quadrant C4,141,435556,309
Events in quadrant D6,804,094539,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177181
B0185541
C0176761
D0257963

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83742873.427275%
B83743974.740865%
C83743454.119895%
D8373129915.514153%

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 8804 8374 0 0 0.00% 0.00%
B 8804 8375 43 43 0.49% 0.51%
C 8804 8374 0 0 0.00% 0.00%
D 8803 8374 868 868 9.86% 10.37%

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 15147 65.64 1055 1031 215.0
A 5 16 14144 60.98 1055 1031 215.0
A 3 137 9304 38.47 1055 1031 215.0
B 3 64 197341 942.57 1058 1028 208.3
B 0 230 43709 204.93 1058 1028 208.3
B 0 190 26689 123.21 1058 1028 208.3
C 14 238 154945 635.42 1018 1024 242.2
C 8 128 12803 48.63 1018 1024 242.2
C 13 61 7023 24.77 1018 1024 242.2
D 1 52 2803750 11793.92 955 927 237.6
D 12 227 126363 527.82 955 927 237.6
D 2 16 103615 432.1 955 927 237.6

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