ASTROSAT CZTI

Data Quality Report

Orbit 16980

Creation date: 2024-06-27T17:30:39.515778
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_058T01_9000002522_16980cztM0_level2.evt modeM0/AS1T03_058T01_9000002522_16980cztM0_level2_quad_clean.evt
Size (bytes)544,613,76087,114,240
Size519.4 MB 83.1 MB
Events in quadrant A3,056,093563,674
Events in quadrant B3,607,139569,211
Events in quadrant C4,241,677553,869
Events in quadrant D5,167,830517,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129151
B0144461
C0169731
D0194381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62121502.414681%
B62132243.605344%
C62132534.072107%
D62136019.673266%

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 7278 6213 0 0 0.00% 0.00%
B 7279 6214 46 46 0.63% 0.74%
C 7279 6214 5 5 0.07% 0.08%
D 7279 6214 384 384 5.28% 6.18%

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 15 174 50869 326.27 778 762 153.6
A 12 189 9874 59.33 778 762 153.6
A 0 226 7038 40.87 778 762 153.6
B 3 64 210047 1466.03 772 754 142.8
B 15 35 115820 806.0 772 754 142.8
B 7 220 65314 452.22 772 754 142.8
C 3 233 1135733 6597.1 750 752 172.0
C 14 238 117875 680.78 750 752 172.0
C 0 207 53888 308.85 750 752 172.0
D 1 52 2292001 13033.75 741 719 175.8
D 15 145 29109 161.49 741 719 175.8
D 2 234 26488 146.58 741 719 175.8

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