ASTROSAT CZTI

Data Quality Report

Orbit 10887

Creation date: 2024-06-27T16:05:13.288712
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/AS1A04_055T01_9000001574_10887cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10887cztM0_level2_quad_clean.evt
Size (bytes)525,456,00086,402,880
Size501.1 MB 82.4 MB
Events in quadrant A3,776,129554,285
Events in quadrant B5,197,324521,631
Events in quadrant C2,675,986570,838
Events in quadrant D3,843,350536,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153232
B0195831
C0125841
D0156131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61891943.134594%
B618990014.541929%
C618970.113104%
D61891382.229762%

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 6964 6190 114 114 1.64% 1.84%
B 6964 6190 642 642 9.22% 10.37%
C 6964 6190 2 2 0.03% 0.03%
D 6964 6190 118 118 1.69% 1.91%

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 5 745601 5185.26 702 688 143.7
A 15 223 159062 1102.42 702 688 143.7
A 5 16 58058 399.35 702 688 143.7
B 4 239 2257084 17709.41 670 655 127.4
B 0 182 196420 1536.45 670 655 127.4
B 0 219 35848 276.21 670 655 127.4
C 0 207 12105 72.91 679 682 156.7
C 13 61 5115 28.29 679 682 156.7
C 14 234 5029 27.75 679 682 156.7
D 1 52 426537 2606.35 675 655 163.4
D 13 249 331066 2022.07 675 655 163.4
D 13 104 150855 919.2 675 655 163.4

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