ASTROSAT CZTI

Data Quality Report

Orbit 30282

Creation date: 2024-06-27T20:13:04.682553
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/AS1A10_007T01_9000004350_30282cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30282cztM0_level2_quad_clean.evt
Size (bytes)627,880,320116,769,600
Size598.8 MB 111.4 MB
Events in quadrant A3,683,214765,808
Events in quadrant B5,401,244793,028
Events in quadrant C3,865,058773,151
Events in quadrant D5,618,770743,173

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149572
B0204312
C0156172
D0212532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6628891.342788%
B66281221.840676%
C66281432.157514%
D66282283.439952%

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 7983 6629 27 27 0.34% 0.41%
B 7983 6629 0 0 0.00% 0.00%
C 7983 6629 10 10 0.13% 0.15%
D 7983 6629 120 120 1.50% 1.81%

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 226999 1285.08 890 874 176.0
A 8 192 21145 115.2 890 874 176.0
A 13 254 11831 62.27 890 874 176.0
B 6 159 1876158 11385.82 894 874 164.7
B 12 111 19897 115.5 894 874 164.7
B 11 111 18459 106.77 894 874 164.7
C 3 233 198486 976.28 877 888 202.4
C 14 238 160174 786.99 877 888 202.4
C 0 10 50504 245.14 877 888 202.4
D 8 195 1787931 8592.47 866 851 208.0
D 1 52 383452 1839.59 866 851 208.0
D 2 250 64260 304.88 866 851 208.0

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