ASTROSAT CZTI

Data Quality Report

Orbit 20151106_P01_118T02_9000000082_level2

Creation date: 2025-01-04T20:34:07.026600
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/AS1P01_118T02_9000000082cztM0_level2.fits modeM0/AS1P01_118T02_9000000082cztM0_level2_quad_clean.evt
Size (bytes)430,920,000475,162,560
Size411.0 MB 453.2 MB
Events in quadrant A2,439,7222,780,001
Events in quadrant B2,451,9702,818,463
Events in quadrant C2,419,3222,694,147
Events in quadrant D2,056,0142,415,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02302800
B02322010
C02127710
D02341050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010980
B010980
C010980
D010980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536724770.888732%
B536792230.415432%
C536701870.348426%
D5367411812.200320%

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 79384 53683 0 0 0.00% 0.00%
B 79384 53684 0 0 0.00% 0.00%
C 79384 53683 0 0 0.00% 0.00%
D 79384 53647 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 2470 12.8 633 592 146.7
A 0 29 2327 11.83 633 592 146.7
A 0 30 1781 8.11 633 592 146.7
B 2 9 1968 11.86 646 616 114.0
B 14 254 1590 8.55 646 616 114.0
B 2 8 1541 8.12 646 616 114.0
C 2 191 1672 6.87 639 591 157.4
C 12 241 1607 6.45 639 591 157.4
C 3 187 1554 6.12 639 591 157.4
D 6 44 1542 7.12 585 536 141.3
D 6 231 1538 7.09 585 536 141.3
D 15 30 1479 6.67 585 536 141.3

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