ASTROSAT CZTI

Data Quality Report

Orbit 38211

Creation date: 2024-06-27T21:49:49.177230
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_38211cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38211cztM0_level2_quad_clean.evt
Size (bytes)346,656,96091,152,000
Size330.6 MB 86.9 MB
Events in quadrant A3,168,924615,440
Events in quadrant B2,678,150628,740
Events in quadrant C3,341,801584,675
Events in quadrant D3,220,678551,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127843
B0116122
C0132232
D0130972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5424881.622419%
B5424721.327434%
C54242264.166667%
D54241482.728614%

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 7096 5425 59 59 0.83% 1.09%
B 7096 5424 51 51 0.72% 0.94%
C 7096 5425 172 172 2.42% 3.17%
D 7096 5425 115 115 1.62% 2.12%

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 392766 3208.83 605 593 122.2
A 13 248 302607 2471.13 605 593 122.2
A 9 143 65714 532.83 605 593 122.2
B 0 229 128408 1094.09 605 588 116.8
B 15 85 60141 509.75 605 588 116.8
B 0 186 49311 417.05 605 588 116.8
C 9 236 626759 4576.28 583 586 136.8
C 15 214 224027 1632.98 583 586 136.8
C 14 254 158015 1150.54 583 586 136.8
D 2 16 204368 1403.44 594 578 145.2
D 10 118 191401 1314.14 594 578 145.2
D 7 55 166880 1145.27 594 578 145.2

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