ASTROSAT CZTI

Data Quality Report

Orbit 39987

Creation date: 2024-06-27T22:10:57.990977
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_054T03_9000005516_39987cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39987cztM0_level2_quad_clean.evt
Size (bytes)385,709,76090,938,880
Size367.8 MB 86.7 MB
Events in quadrant A3,019,121618,567
Events in quadrant B3,158,069629,386
Events in quadrant C2,730,264606,956
Events in quadrant D4,926,057499,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122743
B0131572
C0116552
D0186042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5703100.175346%
B57031292.261967%
C570380.140277%
D570474012.973352%

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 7106 5704 9 9 0.13% 0.16%
B 7106 5704 89 89 1.25% 1.56%
C 7106 5704 8 8 0.11% 0.14%
D 7107 5705 723 723 10.17% 12.67%

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 10 83 511819 3925.77 629 616 130.2
A 13 248 56838 431.75 629 616 130.2
A 7 3 10781 78.06 629 616 130.2
B 4 171 511413 4207.32 622 605 121.4
B 5 255 77783 635.68 622 605 121.4
B 0 230 47617 387.22 622 605 121.4
C 15 214 242170 1665.76 614 618 145.0
C 10 20 33503 226.78 614 618 145.0
C 0 10 28473 192.09 614 618 145.0
D 2 249 1499626 10272.44 579 561 145.9
D 12 227 584491 4001.42 579 561 145.9
D 2 250 198740 1358.03 579 561 145.9

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