ASTROSAT CZTI

Data Quality Report

Orbit 39745

Creation date: 2024-06-27T22:08:30.002961
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_022T01_9000005494_39745cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39745cztM0_level2_quad_clean.evt
Size (bytes)337,567,68091,964,160
Size321.9 MB 87.7 MB
Events in quadrant A3,193,454614,815
Events in quadrant B2,960,432624,086
Events in quadrant C3,111,940593,180
Events in quadrant D2,789,715557,700

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130323
B0126894
C01290124
D0123826

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5650851.504425%
B56491362.407506%
C5644961.700921%
D5647300.531256%

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 7204 5652 54 54 0.75% 0.96%
B 7204 5651 93 93 1.29% 1.65%
C 7204 5649 99 99 1.37% 1.75%
D 7204 5651 33 33 0.46% 0.58%

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 466535 3738.05 610 598 124.6
A 15 174 175008 1399.23 610 598 124.6
A 9 143 98058 781.89 610 598 124.6
B 5 255 402649 3464.57 604 587 116.0
B 5 172 115698 991.91 604 587 116.0
B 0 190 28235 238.24 604 587 116.0
C 9 187 291194 2098.42 592 594 138.5
C 15 214 231302 1665.94 592 594 138.5
C 4 0 231105 1664.52 592 594 138.5
D 12 227 257573 1757.53 596 578 146.2
D 2 250 70164 475.88 596 578 146.2
D 12 218 38892 262.02 596 578 146.2

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