ASTROSAT CZTI

Data Quality Report

Orbit 40477

Creation date: 2024-06-27T22:16:35.290473
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_022T01_9000005540_40477cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40477cztM0_level2_quad_clean.evt
Size (bytes)297,077,76085,150,080
Size283.3 MB 81.2 MB
Events in quadrant A3,051,583588,687
Events in quadrant B2,289,118600,766
Events in quadrant C2,460,471563,870
Events in quadrant D2,798,179468,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124053
B0102962
C0105292
D0117852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5090360.707269%
B509060.117878%
C5090320.628684%
D509067513.261297%

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 7151 5091 15 15 0.21% 0.29%
B 7151 5091 4 4 0.06% 0.08%
C 7151 5091 28 28 0.39% 0.55%
D 7151 5091 86 86 1.20% 1.69%

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 480748 4263.27 557 547 112.6
A 9 191 313306 2776.71 557 547 112.6
A 13 248 95257 840.84 557 547 112.6
B 3 112 72639 671.6 554 536 107.4
B 15 201 24398 222.26 554 536 107.4
B 12 111 13191 117.87 554 536 107.4
C 15 214 220910 1736.27 544 548 126.9
C 14 254 93083 729.1 544 548 126.9
C 0 10 15752 119.8 544 548 126.9
D 2 250 456155 3608.49 512 498 126.3
D 12 191 180999 1429.45 512 498 126.3
D 9 19 57196 449.01 512 498 126.3

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