ASTROSAT CZTI

Data Quality Report

Orbit 18658

Creation date: 2024-06-27T17:53:03.022191
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_003T01_9000002786_18658cztM0_level2.evt modeM0/AS1A06_003T01_9000002786_18658cztM0_level2_quad_clean.evt
Size (bytes)594,564,480106,925,760
Size567.0 MB 102.0 MB
Events in quadrant A3,341,012719,504
Events in quadrant B3,393,735735,717
Events in quadrant C3,624,147715,444
Events in quadrant D7,224,300630,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140012
B0140912
C0146352
D0259132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6257821.310532%
B62561031.646419%
C62561612.573529%
D6256109917.567136%

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 7607 6258 2 2 0.03% 0.03%
B 7606 6257 2 2 0.03% 0.03%
C 7606 6257 6 6 0.08% 0.10%
D 7606 6257 969 969 12.74% 15.49%

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 15 192 36741 211.58 851 837 169.7
A 6 16 20660 116.81 851 837 169.7
A 13 254 9150 48.99 851 837 169.7
B 4 216 39574 245.85 850 830 157.6
B 12 111 18532 112.33 850 830 157.6
B 11 111 16063 96.66 850 830 157.6
C 3 233 192240 992.69 835 841 192.8
C 14 238 129703 668.34 835 841 192.8
C 9 221 46443 236.52 835 841 192.8
D 7 238 2712432 14212.96 799 777 190.8
D 1 52 927195 4855.76 799 777 190.8
D 13 168 545549 2855.39 799 777 190.8

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