ASTROSAT CZTI

Data Quality Report

Orbit 43521

Creation date: 2024-06-27T22:52:45.291814
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_9000005874_43521cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43521cztM0_level2_quad_clean.evt
Size (bytes)1,224,627,84067,412,160
Size1.1 GB 64.3 MB
Events in quadrant A10,905,819657,033
Events in quadrant B9,871,238650,460
Events in quadrant C17,815,433238,154
Events in quadrant D6,206,5377,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372043
B0340932
C0576512
D0232602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6874260837.940064%
B6874241035.059645%
C6875685999.767273%
D68756875100.000000%

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 7099 6877 1817 1817 25.60% 26.42%
B 7099 6876 1856 1856 26.14% 26.99%
C 7099 6874 6625 6625 93.32% 96.38%
D 7099 6874 172 172 2.42% 2.50%

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 0 228 3546767 25714.98 667 653 137.9
A 0 175 1504041 10901.96 667 653 137.9
A 14 235 1059929 7681.44 667 653 137.9
B 3 25 5462365 44155.35 642 625 123.7
B 3 42 1040774 8409.07 642 625 123.7
B 4 206 154570 1244.57 642 625 123.7
C 15 158 11231671 183913.97 255 256 61.1
C 15 142 2142838 35084.69 255 256 61.1
C 5 80 1565464 25630.22 255 256 61.1
D 4 214 1540663 100814.17 11 10 15.3
D 4 216 986711 64565.77 11 10 15.3
D 4 215 570900 37356.76 11 10 15.3

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