ASTROSAT CZTI

Data Quality Report

Orbit 06702

Creation date: 2024-06-27T15:10:33.805671
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/AS1T01_145T01_9000000916_06702cztM0_level2.evt modeM0/AS1T01_145T01_9000000916_06702cztM0_level2_quad_clean.evt
Size (bytes)445,878,72079,545,600
Size425.2 MB 75.9 MB
Events in quadrant A2,009,086559,713
Events in quadrant B2,182,275572,841
Events in quadrant C1,946,385554,974
Events in quadrant D7,058,516403,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091812
B096411
C090781
D0240521

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4517350.774851%
B4517450.996236%
C451760.132832%
D4517164936.506531%

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 4517 4517 0 0 0.00% 0.00%
B 4517 4517 17 17 0.38% 0.38%
C 4517 4517 0 0 0.00% 0.00%
D 4517 4517 1353 1353 29.95% 29.95%

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 43826 425.53 503 492 101.8
A 14 111 20337 194.87 503 492 101.8
A 13 14 5227 46.5 503 492 101.8
B 4 80 95587 980.63 512 500 97.0
B 0 219 27437 277.8 512 500 97.0
B 15 204 19470 195.63 512 500 97.0
C 8 128 9477 79.33 492 495 113.2
C 12 4 5754 46.45 492 495 113.2
C 8 112 5261 42.09 492 495 113.2
D 2 63 3057812 31447.49 394 382 97.2
D 2 33 2037972 20957.83 394 382 97.2
D 2 152 327830 3368.0 394 382 97.2

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