ASTROSAT CZTI

Data Quality Report

Orbit 52059

Creation date: 2025-05-13T22:02:38.395497
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_011T06_9000006468_52059cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52059cztM0_level2_quad_clean.evt
Size (bytes)795,916,80067,872,960
Size759.0 MB 64.7 MB
Events in quadrant A3,646,387552,706
Events in quadrant B6,045,128519,974
Events in quadrant C3,903,172527,747
Events in quadrant D15,402,41135,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149101
B0221061
C0158851
D0498551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59942494.154154%
B5994104817.484151%
C59952844.737281%
D5995565994.395329%

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 7024 5994 129 129 1.84% 2.15%
B 7024 5994 740 740 10.54% 12.35%
C 7025 5996 189 189 2.69% 3.15%
D 7025 5995 5445 5445 77.51% 90.83%

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 8 249 191524 1243.25 618 604 153.6
A 4 249 188647 1224.51 618 604 153.6
A 3 79 117343 760.19 618 604 153.6
B 8 3 2583744 21075.07 575 557 122.6
B 8 128 360865 2939.59 575 557 122.6
B 0 171 143934 1169.75 575 557 122.6
C 15 224 861348 5230.58 600 593 164.6
C 3 233 85610 516.62 600 593 164.6
C 13 3 85084 513.43 600 593 164.6
D 15 94 9028419 129302.65 239 229 69.8
D 6 42 2902644 41568.68 239 229 69.8
D 12 17 871360 12476.43 239 229 69.8

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