ASTROSAT CZTI

Data Quality Report

Orbit 20230403_A12_029T01_9000005556_level2

Creation date: 2023-04-06T12:35:36.119129
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_029T01_9000005556cztM0_level2.fits modeM0/AS1A12_029T01_9000005556cztM0_level2_quad_clean.evt
Size (bytes)1,139,898,2401,142,832,960
Size1.1 GB 1.1 GB
Events in quadrant A6,992,0166,925,537
Events in quadrant B6,328,0326,519,979
Events in quadrant C6,824,6946,654,625
Events in quadrant D5,407,2925,551,120

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02753760
B03557430
C02720240
D03286190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04870
B04870
C04870
D04880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026680
B026680
C026680
D026680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1307502270.173614%
B130750107108.191205%
C1307505460.417591%
D1307501560611.935755%

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 183414 130751 0 0 0.00% 0.00%
B 183414 130370 0 0 0.00% 0.00%
C 183413 130732 0 0 0.00% 0.00%
D 183414 130134 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 5756 8.78 1824 1704 461.7
A 0 29 5574 8.38 1824 1704 461.7
A 9 19 5502 8.23 1824 1704 461.7
B 2 9 5465 11.81 1672 1589 328.3
B 3 80 4523 8.94 1672 1589 328.3
B 2 8 4385 8.52 1672 1589 328.3
C 1 81 5513 8.24 1802 1677 465.4
C 3 203 5281 7.74 1802 1677 465.4
C 1 80 5274 7.73 1802 1677 465.4
D 7 3 4120 5.87 1571 1426 458.7
D 3 14 4084 5.79 1571 1426 458.7
D 10 189 4057 5.73 1571 1426 458.7

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