ASTROSAT CZTI

Data Quality Report

Orbit 19606

Creation date: 2024-06-27T18:04:41.167525
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/AS1T03_115T01_9000002914_19606cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19606cztM0_level2_quad_clean.evt
Size (bytes)934,764,480168,379,200
Size891.5 MB 160.6 MB
Events in quadrant A6,338,8231,066,735
Events in quadrant B6,590,7881,069,267
Events in quadrant C6,715,8381,029,393
Events in quadrant D7,762,4881,014,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276113
B0282823
C0282013
D0323434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133201541.156156%
B133212121.591472%
C133212672.004354%
D133203312.484985%

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 14930 13321 6 6 0.04% 0.05%
B 14931 13321 36 36 0.24% 0.27%
C 14931 13322 0 0 0.00% 0.00%
D 14930 13320 204 204 1.37% 1.53%

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 9 143 85358 258.43 1600 1563 324.3
A 5 16 56608 169.76 1600 1563 324.3
A 11 29 26492 76.88 1600 1563 324.3
B 7 220 130731 424.65 1591 1550 304.2
B 4 216 113899 369.32 1591 1550 304.2
B 0 197 43838 139.01 1591 1550 304.2
C 3 233 512779 1430.38 1527 1534 357.4
C 14 238 237207 659.38 1527 1534 357.4
C 13 61 10786 25.89 1527 1534 357.4
D 1 52 1744584 4611.58 1547 1500 378.0
D 7 238 61819 159.58 1547 1500 378.0
D 2 234 55769 143.58 1547 1500 378.0

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