ASTROSAT CZTI

Data Quality Report

Orbit 26283

Creation date: 2024-06-27T19:26:58.619806
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/AS1A09_079T03_9000003790_26283cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26283cztM0_level2_quad_clean.evt
Size (bytes)534,427,20086,014,080
Size509.7 MB 82.0 MB
Events in quadrant A3,802,937536,276
Events in quadrant B3,617,226551,469
Events in quadrant C3,775,486537,910
Events in quadrant D4,548,027525,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157740
B0151590
C0156050
D0180610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65111342.058056%
B65111211.858393%
C65101782.734255%
D65103665.622120%

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 7621 6512 48 48 0.63% 0.74%
B 7621 6512 32 32 0.42% 0.49%
C 7620 6511 21 21 0.28% 0.32%
D 7620 6511 230 230 3.02% 3.53%

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 0 13 567205 3350.34 838 818 169.1
A 13 254 11148 61.1 838 818 169.1
A 3 137 7513 39.6 838 818 169.1
B 5 172 171996 1072.08 841 822 159.7
B 6 203 141651 882.03 841 822 159.7
B 12 111 18161 108.6 841 822 159.7
C 3 233 256948 1341.02 820 827 191.0
C 0 239 167599 873.2 820 827 191.0
C 14 238 131087 682.03 820 827 191.0
D 1 52 1404441 7248.3 805 787 193.7
D 2 234 29224 146.85 805 787 193.7
D 13 168 21157 105.19 805 787 193.7

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