ASTROSAT CZTI

Data Quality Report

Orbit 17743

Creation date: 2024-06-27T17:40:20.729687
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/AS1T03_070T04_9000002638_17743cztM0_level2.evt modeM0/AS1T03_070T04_9000002638_17743cztM0_level2_quad_clean.evt
Size (bytes)342,233,28057,614,400
Size326.4 MB 54.9 MB
Events in quadrant A2,218,645360,825
Events in quadrant B2,300,997370,207
Events in quadrant C2,342,817351,150
Events in quadrant D3,188,394338,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096792
B098441
C097901
D0127921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4606230.499349%
B4606340.738168%
C4606430.933565%
D4606891.932262%

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 5826 4607 0 0 0.00% 0.00%
B 5826 4607 5 5 0.09% 0.11%
C 5826 4607 0 0 0.00% 0.00%
D 5826 4607 65 65 1.12% 1.41%

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 15 174 49959 437.23 558 546 113.0
A 15 191 19801 170.38 558 546 113.0
A 0 226 4960 39.06 558 546 113.0
B 0 219 41182 383.27 562 549 106.0
B 10 247 23148 213.17 562 549 106.0
B 0 229 16786 153.16 562 549 106.0
C 14 238 84974 661.0 542 548 127.7
C 3 233 79083 614.88 542 548 127.7
C 5 218 42088 325.23 542 548 127.7
D 1 52 937399 6429.2 535 524 145.7
D 7 238 139042 950.56 535 524 145.7
D 13 168 35304 238.67 535 524 145.7

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