ASTROSAT CZTI

Data Quality Report

Orbit 00694

Creation date: 2024-06-27T14:01:39.969747
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/AS1P01_147T02_9000000098_00694cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00694cztM0_level2_quad_clean.evt
Size (bytes)1,079,320,32062,268,480
Size1.0 GB 59.4 MB
Events in quadrant A7,421,376362,677
Events in quadrant B7,787,089372,702
Events in quadrant C9,514,664354,616
Events in quadrant D7,536,431344,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266111
B0277141
C0327681
D0269898

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458100.154847%
B645870.108393%
C6459100.154823%
D6458110.170331%

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 7743 6459 141 141 1.82% 2.18%
B 7743 6459 134 134 1.73% 2.07%
C 7744 6460 346 346 4.47% 5.36%
D 7743 6459 465 465 6.01% 7.20%

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 13 17 63242 133.62 1907 1925 458.9
A 15 171 33333 68.44 1907 1925 458.9
A 11 79 7650 12.48 1907 1925 458.9
B 0 220 41650 84.17 2017 2028 470.8
B 5 191 35735 71.6 2017 2028 470.8
B 7 221 27902 54.96 2017 2028 470.8
C 3 127 1075674 2107.39 1838 1903 509.5
C 3 31 264583 515.54 1838 1903 509.5
C 3 15 247405 481.82 1838 1903 509.5
D 13 72 787187 1460.43 1750 1815 537.8
D 0 25 116466 213.2 1750 1815 537.8
D 1 4 49566 88.79 1750 1815 537.8

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