ASTROSAT CZTI

Data Quality Report

Orbit 04908

Creation date: 2024-06-27T14:48:42.232264
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/AS1G05_237T01_9000000620_04908cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04908cztM0_level2_quad_clean.evt
Size (bytes)499,821,12053,089,920
Size476.7 MB 50.6 MB
Events in quadrant A2,738,107334,405
Events in quadrant B2,327,327336,042
Events in quadrant C2,186,974334,790
Events in quadrant D7,563,749269,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110730
B098350
C095880
D0257130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4724601.270110%
B4724150.317528%
C472400.000000%
D4724227048.052498%

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 4724 4724 66 66 1.40% 1.40%
B 4724 4724 6 6 0.13% 0.13%
C 4724 4724 0 0 0.00% 0.00%
D 4724 4724 1934 1934 40.94% 40.94%

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 8 15 418080 3568.49 570 559 117.0
A 13 251 92049 781.95 570 559 117.0
A 0 31 26473 221.48 570 559 117.0
B 15 204 29656 266.53 575 565 109.1
B 15 54 27803 249.55 575 565 109.1
B 4 48 18398 163.38 575 565 109.1
C 1 16 7567 54.0 556 560 129.8
C 12 4 6292 44.17 556 560 129.8
C 13 61 4620 31.29 556 560 129.8
D 2 63 4915021 43142.58 455 441 113.9
D 2 33 272757 2390.52 455 441 113.9
D 2 136 217208 1902.89 455 441 113.9

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