ASTROSAT CZTI

Data Quality Report

Orbit 36560

Creation date: 2024-06-27T21:28:24.065659
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/AS1A11_049T02_9000005220_36560cztM0_level2.evt modeM0/AS1A11_049T02_9000005220_36560cztM0_level2_quad_clean.evt
Size (bytes)464,604,48061,073,280
Size443.1 MB 58.2 MB
Events in quadrant A2,978,091368,078
Events in quadrant B3,744,435360,977
Events in quadrant C3,263,009357,765
Events in quadrant D3,676,730341,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125593
B0150092
C0132362
D0151132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6009160.266267%
B60091893.145282%
C6009991.647529%
D60091442.396405%

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 9175 6011 6 6 0.07% 0.10%
B 9175 6011 123 123 1.34% 2.05%
C 9175 6011 71 71 0.77% 1.18%
D 9175 6011 106 106 1.16% 1.76%

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 211112 1499.84 698 686 140.3
A 9 143 36325 254.02 698 686 140.3
A 15 223 17270 118.21 698 686 140.3
B 5 172 778567 5955.59 686 666 130.6
B 5 255 105424 802.02 686 666 130.6
B 0 189 77802 590.55 686 666 130.6
C 0 10 260063 1657.02 671 675 156.5
C 15 214 258040 1644.1 671 675 156.5
C 12 249 85180 539.84 671 675 156.5
D 2 153 189583 1164.51 667 652 162.2
D 2 250 187787 1153.44 667 652 162.2
D 2 249 116454 713.77 667 652 162.2

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