ASTROSAT CZTI

Data Quality Report

Orbit 46663

Creation date: 2024-06-27T23:26:05.766130
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/AS1A13_039T01_9000006246_46663cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46663cztM0_level2_quad_clean.evt
Size (bytes)529,980,480109,972,800
Size505.4 MB 104.9 MB
Events in quadrant A6,516,234721,546
Events in quadrant B3,819,246767,013
Events in quadrant C3,157,737737,264
Events in quadrant D5,605,315636,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238232
B0159222
C0144662
D0214822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67042363.520286%
B67041492.222554%
C67041111.655728%
D67045127.637232%

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 7889 6705 111 111 1.41% 1.66%
B 7889 6705 55 55 0.70% 0.82%
C 7889 6705 51 51 0.65% 0.76%
D 7889 6705 433 433 5.49% 6.46%

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 3623673 24665.55 710 696 146.9
A 0 247 37158 248.24 710 696 146.9
A 0 243 27101 179.77 710 696 146.9
B 0 189 181453 1294.52 725 703 139.6
B 15 201 151721 1081.58 725 703 139.6
B 4 171 147985 1054.82 725 703 139.6
C 1 241 259535 1563.25 713 717 165.6
C 3 233 33844 200.09 713 717 165.6
C 12 250 23337 136.62 713 717 165.6
D 13 249 1221484 7014.87 685 662 174.0
D 1 52 838513 4814.31 685 662 174.0
D 12 128 288199 1652.19 685 662 174.0

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