ASTROSAT CZTI

Data Quality Report

Orbit 39176

Creation date: 2024-06-27T22:01:24.922118
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/AS1A12_054T02_9000005444_39176cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39176cztM0_level2_quad_clean.evt
Size (bytes)451,664,64092,160,000
Size430.7 MB 87.9 MB
Events in quadrant A3,056,711646,828
Events in quadrant B2,676,907653,002
Events in quadrant C2,732,663619,819
Events in quadrant D7,807,286470,106

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127473
B0120242
C0118402
D0272422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5732390.680391%
B5732190.331472%
C5732140.244243%
D5732132423.098395%

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 8749 5734 22 22 0.25% 0.38%
B 8749 5734 8 8 0.09% 0.14%
C 8749 5734 5 5 0.06% 0.09%
D 8749 5734 1139 1139 13.02% 19.86%

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 10 83 453823 3582.88 626 615 126.5
A 9 143 110451 868.32 626 615 126.5
A 2 79 31877 247.14 626 615 126.5
B 5 184 165468 1355.78 621 604 121.6
B 5 172 34072 275.23 621 604 121.6
B 0 190 26690 214.52 621 604 121.6
C 15 214 238249 1670.11 609 611 142.3
C 9 187 92167 643.45 609 611 142.3
C 0 10 14915 100.53 609 611 142.3
D 12 235 4803125 33932.24 569 551 141.5
D 2 249 351821 2481.87 569 551 141.5
D 12 233 205950 1451.23 569 551 141.5

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