ASTROSAT CZTI

Data Quality Report

Orbit 20230419_A12_097T01_9000005574_level2

Creation date: 2023-04-24T13:53:48.984543
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_097T01_9000005574cztM0_level2.fits modeM0/AS1A12_097T01_9000005574cztM0_level2_quad_clean.evt
Size (bytes)1,349,671,6801,351,330,560
Size1.3 GB 1.3 GB
Events in quadrant A8,114,5848,020,864
Events in quadrant B7,652,4027,884,684
Events in quadrant C8,006,3467,892,748
Events in quadrant D6,666,1486,698,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05740
B05740
C05740
D05750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031020
B031020
C031020
D031020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03389120
B04065930
C03224620
D04648620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1522285190.340936%
B15222791786.029154%
C15222710140.666110%
D15222783495.484572%

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 217433 152230 0 0 0.00% 0.00%
B 217433 152178 0 0 0.00% 0.00%
C 217433 152181 0 0 0.00% 0.00%
D 217433 152021 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 6659 8.86 2119 1977 528.6
A 9 19 6502 8.56 2119 1977 528.6
A 0 29 6469 8.5 2119 1977 528.6
B 2 9 6352 11.39 2024 1926 388.7
B 3 80 5474 9.13 2024 1926 388.7
B 3 17 5357 8.83 2024 1926 388.7
C 1 81 6472 8.25 2115 1974 545.0
C 1 80 6227 7.8 2115 1974 545.0
C 3 202 6169 7.7 2115 1974 545.0
D 10 189 4996 6.39 1911 1737 510.1
D 4 160 4985 6.37 1911 1737 510.1
D 7 3 4883 6.17 1911 1737 510.1

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