ASTROSAT CZTI

Data Quality Report

Orbit 20230405_A12_029T02_9000005558_level2

Creation date: 2023-04-11T13:50:20.156933
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_029T02_9000005558cztM0_level2.fits modeM0/AS1A12_029T02_9000005558cztM0_level2_quad_clean.evt
Size (bytes)2,081,986,5602,328,036,480
Size1.9 GB 2.2 GB
Events in quadrant A12,748,00214,401,546
Events in quadrant B12,240,88414,594,621
Events in quadrant C12,023,22613,301,084
Events in quadrant D9,691,77511,884,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05188700
B05387940
C07486290
D05840450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09160
B09160
C09160
D09130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048770
B048860
C048800
D048750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2384019120.382549%
B23836729571.240524%
C238013184547.753358%
D2383923361914.102403%

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 339940 239038 0 0 0.00% 0.00%
B 339940 238972 0 0 0.00% 0.00%
C 339941 238462 0 0 0.00% 0.00%
D 339941 236579 0 0 0.00% 0.00%

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 7 110 10531 8.89 3323 3104 835.3
A 9 19 10412 8.75 3323 3104 835.3
A 0 29 10276 8.59 3323 3104 835.3
B 2 9 10592 12.1 3236 3087 620.5
B 3 80 8927 9.41 3236 3087 620.5
B 2 8 8564 8.83 3236 3087 620.5
C 1 81 9657 8.21 3178 2970 814.2
C 3 202 9437 7.94 3178 2970 814.2
C 1 80 9347 7.83 3178 2970 814.2
D 7 3 7497 6.01 2818 2557 821.7
D 10 189 7453 5.96 2818 2557 821.7
D 6 67 7292 5.76 2818 2557 821.7

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