ASTROSAT CZTI

Data Quality Report

Orbit 38291

Creation date: 2024-06-27T21:50:49.708773
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/AS1A07_145T01_9000005370_38291cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38291cztM0_level2_quad_clean.evt
Size (bytes)503,254,08086,607,360
Size479.9 MB 82.6 MB
Events in quadrant A2,786,478608,681
Events in quadrant B2,495,803624,265
Events in quadrant C3,448,731584,616
Events in quadrant D9,483,980431,356

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114393
B0110842
C0135722
D0318392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5336110.206147%
B5336230.431034%
C53362154.029235%
D5336143126.817841%

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 7218 5337 6 6 0.08% 0.11%
B 7218 5337 7 7 0.10% 0.13%
C 7218 5337 179 179 2.48% 3.35%
D 7218 5337 1612 1612 22.33% 30.20%

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 382362 3163.59 593 581 120.7
A 12 189 34548 281.46 593 581 120.7
A 12 16 28599 232.17 593 581 120.7
B 5 172 66239 576.75 593 576 113.8
B 0 229 58349 507.45 593 576 113.8
B 12 111 14567 122.89 593 576 113.8
C 9 236 779342 5774.68 574 579 134.9
C 15 214 223179 1650.62 574 579 134.9
C 14 254 113460 837.03 574 579 134.9
D 10 203 5326535 40805.33 530 515 130.5
D 1 47 910264 6970.05 530 515 130.5
D 12 235 678224 5192.27 530 515 130.5

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