ASTROSAT CZTI

Data Quality Report

Orbit 40631

Creation date: 2024-06-27T22:18:27.743311
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_029T01_9000005556_40631cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40631cztM0_level2_quad_clean.evt
Size (bytes)312,791,04091,722,240
Size298.3 MB 87.5 MB
Events in quadrant A2,897,863612,978
Events in quadrant B2,706,707634,756
Events in quadrant C2,599,833608,754
Events in quadrant D2,937,746529,908

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121403
B0119312
C0113602
D0125282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5593320.572144%
B5593370.661541%
C559380.143036%
D55933045.435366%

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 8909 5595 19 19 0.21% 0.34%
B 8909 5595 16 16 0.18% 0.29%
C 8909 5595 2 2 0.02% 0.04%
D 8909 5595 31 31 0.35% 0.55%

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 479062 3832.47 606 594 124.8
A 15 223 60489 479.75 606 594 124.8
A 13 254 6960 50.99 606 594 124.8
B 0 190 113384 950.2 607 589 118.7
B 5 255 111931 937.96 607 589 118.7
B 0 229 76006 635.32 607 589 118.7
C 15 214 244090 1747.75 595 598 139.3
C 14 254 16175 111.81 595 598 139.3
C 0 10 13416 92.01 595 598 139.3
D 12 227 369216 2611.16 572 557 141.2
D 12 191 161464 1139.68 572 557 141.2
D 2 250 117417 827.7 572 557 141.2

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