ASTROSAT CZTI

Data Quality Report

Orbit 39724

Creation date: 2024-06-27T22:08:14.758666
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_022T01_9000005494_39724cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39724cztM0_level2_quad_clean.evt
Size (bytes)342,936,00086,958,720
Size327.0 MB 82.9 MB
Events in quadrant A3,468,989571,334
Events in quadrant B2,733,975610,118
Events in quadrant C2,771,089584,459
Events in quadrant D3,333,614519,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135303
B0115142
C0111442
D0132972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49643196.426269%
B4964871.752619%
C4964110.221595%
D49642745.519742%

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 6996 4964 255 255 3.64% 5.14%
B 6997 4965 49 49 0.70% 0.99%
C 6997 4965 7 7 0.10% 0.14%
D 6997 4965 261 261 3.73% 5.26%

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 15 174 704018 6392.68 544 533 110.0
A 10 83 424985 3857.06 544 533 110.0
A 13 248 221117 2004.48 544 533 110.0
B 5 172 378871 3488.94 562 548 108.4
B 5 255 68174 623.65 562 548 108.4
B 4 67 31184 282.53 562 548 108.4
C 15 208 275032 2114.91 555 559 129.8
C 15 214 206613 1587.72 555 559 129.8
C 9 187 73734 563.84 555 559 129.8
D 12 227 950136 7226.41 536 521 131.4
D 12 233 141734 1074.61 536 521 131.4
D 12 218 56403 425.25 536 521 131.4

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