ASTROSAT CZTI

Data Quality Report

Orbit 37451

Creation date: 2024-06-27T21:40:08.904755
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/AS1A09_002T01_9000005322_37451cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37451cztM0_level2_quad_clean.evt
Size (bytes)528,258,24094,478,400
Size503.8 MB 90.1 MB
Events in quadrant A2,887,561656,637
Events in quadrant B4,198,408632,650
Events in quadrant C4,388,394595,071
Events in quadrant D4,174,515614,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115753
B0158052
C0161762
D0158082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5159160.310138%
B515956010.854817%
C515984316.340376%
D51594037.811591%

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 7073 5160 8 8 0.11% 0.16%
B 7073 5160 488 488 6.90% 9.46%
C 7073 5160 612 612 8.65% 11.86%
D 7073 5160 345 345 4.88% 6.69%

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 276620 2311.26 594 583 119.4
A 13 248 217355 1815.03 594 583 119.4
A 15 222 47116 389.62 594 583 119.4
B 15 35 1576244 14795.46 562 549 106.5
B 4 171 276574 2591.82 562 549 106.5
B 0 213 21906 200.54 562 549 106.5
C 14 254 1954872 16245.19 523 528 120.3
C 15 214 205703 1705.48 523 528 120.3
C 0 10 178282 1477.55 523 528 120.3
D 13 249 802850 5830.57 566 551 137.6
D 10 199 314419 2280.98 566 551 137.6
D 2 249 246955 1790.7 566 551 137.6

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