ASTROSAT CZTI

Data Quality Report

Orbit 39616

Creation date: 2024-06-27T22:06:51.442044
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_018T01_9000005488_39616cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39616cztM0_level2_quad_clean.evt
Size (bytes)367,767,36086,955,840
Size350.7 MB 82.9 MB
Events in quadrant A3,370,288588,545
Events in quadrant B2,589,408602,449
Events in quadrant C4,210,276550,820
Events in quadrant D3,039,333526,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132792
B0113341
C0159161
D0126431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198931.789150%
B5198621.192766%
C51982204.232397%
D5198901.731435%

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 6900 5199 69 69 1.00% 1.33%
B 6900 5199 43 43 0.62% 0.83%
C 6900 5199 217 217 3.14% 4.17%
D 6900 5199 75 75 1.09% 1.44%

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 13 248 376985 3238.54 571 560 116.2
A 10 83 372307 3198.29 571 560 116.2
A 15 222 306035 2628.13 571 560 116.2
B 5 255 365752 3370.7 565 550 108.3
B 12 111 13408 118.68 565 550 108.3
B 11 111 12418 109.54 565 550 108.3
C 9 187 1197172 9297.38 551 557 128.7
C 15 208 631515 4902.38 551 557 128.7
C 15 214 209044 1619.89 551 557 128.7
D 2 249 376795 2748.57 560 543 136.9
D 13 249 173539 1263.76 560 543 136.9
D 1 47 78969 572.91 560 543 136.9

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