ASTROSAT CZTI

Data Quality Report

Orbit 19724

Creation date: 2024-06-27T18:06:02.927273
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/AS1A05_013T01_9000002944_19724cztM0_level2.evt modeM0/AS1A05_013T01_9000002944_19724cztM0_level2_quad_clean.evt
Size (bytes)486,192,96096,278,400
Size463.7 MB 91.8 MB
Events in quadrant A3,211,959633,828
Events in quadrant B3,607,396635,476
Events in quadrant C3,631,465590,076
Events in quadrant D3,813,728584,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140272
B0151892
C0153462
D0160312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6778200.295072%
B6778670.988492%
C6778640.944231%
D67782173.201534%

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 7838 6779 0 0 0.00% 0.00%
B 7838 6779 35 35 0.45% 0.52%
C 7838 6779 0 0 0.00% 0.00%
D 7838 6779 147 147 1.88% 2.17%

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 6 16 8466 45.35 832 815 168.7
A 0 226 7236 38.06 832 815 168.7
A 3 137 6624 34.43 832 815 168.7
B 7 220 227890 1419.47 826 807 160.0
B 4 171 40920 250.74 826 807 160.0
B 4 216 40211 246.31 826 807 160.0
C 3 233 455709 2512.09 778 784 181.1
C 14 238 123272 676.38 778 784 181.1
C 7 247 13934 72.61 778 784 181.1
D 1 52 639787 3344.22 787 764 191.1
D 2 16 71962 372.6 787 764 191.1
D 7 96 33698 172.35 787 764 191.1

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