ASTROSAT CZTI

Data Quality Report

Orbit 39031

Creation date: 2024-06-27T21:59:21.588537
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_042T01_9000005428_39031cztM0_level2.fits modeM0/AS1A12_042T01_9000005428_39031cztM0_level2_quad_clean.evt
Size (bytes)358,416,00092,399,040
Size341.8 MB 88.1 MB
Events in quadrant A4,727,909592,346
Events in quadrant B2,468,446638,084
Events in quadrant C2,578,598613,651
Events in quadrant D3,057,358562,703

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178513
B0114262
C0113522
D0130922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55883726.657122%
B5588200.357910%
C558850.089477%
D5588891.592699%

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 7021 5589 315 315 4.49% 5.64%
B 7021 5589 5 5 0.07% 0.09%
C 7021 5589 2 2 0.03% 0.04%
D 7021 5589 72 72 1.03% 1.29%

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 15 222 1308313 10907.57 592 579 119.9
A 10 83 407722 3395.91 592 579 119.9
A 13 248 326496 2718.41 592 579 119.9
B 5 172 58903 499.77 603 585 116.7
B 0 230 20103 167.26 603 585 116.7
B 12 111 14968 123.26 603 585 116.7
C 15 214 236550 1705.45 594 597 138.4
C 15 159 9224 62.36 594 597 138.4
C 3 233 9213 62.28 594 597 138.4
D 2 249 354383 2459.36 585 568 143.9
D 12 235 175607 1216.69 585 568 143.9
D 12 227 69175 476.89 585 568 143.9

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