ASTROSAT CZTI

Data Quality Report

Orbit 43953

Creation date: 2024-06-27T22:57:36.483742
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/AS1A13_025T01_9000005920_43953cztM0_level2.fits modeM0/AS1A13_025T01_9000005920_43953cztM0_level2_quad_clean.evt
Size (bytes)487,532,160114,603,840
Size464.9 MB 109.3 MB
Events in quadrant A5,840,259761,858
Events in quadrant B3,979,376773,344
Events in quadrant C3,287,650773,360
Events in quadrant D4,416,609691,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222532
B0162612
C0144982
D0178032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67382483.680617%
B67383585.313149%
C6738550.816266%
D67381882.790145%

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 7928 6739 97 97 1.22% 1.44%
B 7928 6739 192 192 2.42% 2.85%
C 7928 6739 37 37 0.47% 0.55%
D 7928 6739 152 152 1.92% 2.26%

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 15 222 1408348 8890.71 766 751 158.3
A 10 83 1231962 7776.61 766 751 158.3
A 15 223 110991 696.3 766 751 158.3
B 5 172 635344 4228.62 764 741 150.1
B 5 235 130588 865.22 764 741 150.1
B 4 171 45526 298.42 764 741 150.1
C 1 241 160815 885.57 766 772 180.7
C 14 254 76497 419.01 766 772 180.7
C 3 233 25836 138.69 766 772 180.7
D 5 235 498963 2552.95 753 730 195.2
D 1 52 243194 1242.39 753 730 195.2
D 13 249 145400 741.29 753 730 195.2

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