ASTROSAT CZTI

Data Quality Report

Orbit 51914

Creation date: 2025-05-04T03:05:23.370962
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/AS1C09_011T05_9000006466_51914cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51914cztM0_level2_quad_clean.evt
Size (bytes)662,820,48082,975,680
Size632.1 MB 79.1 MB
Events in quadrant A5,435,809560,888
Events in quadrant B5,224,487578,947
Events in quadrant C5,704,380531,784
Events in quadrant D7,688,080404,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205641
B0198621
C0213291
D0270532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62354096.559743%
B623570111.242983%
C623666210.615779%
D6235165426.527666%

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 7315 6236 334 334 4.57% 5.36%
B 7315 6235 515 515 7.04% 8.26%
C 7316 6236 526 526 7.19% 8.43%
D 7314 6234 1531 1531 20.93% 24.56%

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 12 3 959625 6036.57 633 618 158.9
A 7 64 818770 5149.94 633 618 158.9
A 3 95 191506 1201.56 633 618 158.9
B 5 32 1138505 8581.55 624 603 132.6
B 4 171 499577 3763.04 624 603 132.6
B 1 238 230042 1730.33 624 603 132.6
C 15 158 994173 5790.8 620 615 171.6
C 15 231 472461 2750.08 620 615 171.6
C 13 3 376831 2192.72 620 615 171.6
D 12 17 2017277 12952.91 543 519 155.7
D 15 94 1244740 7991.19 543 519 155.7
D 6 42 936579 6011.98 543 519 155.7

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