ASTROSAT CZTI

Data Quality Report

Orbit 21329

Creation date: 2024-06-27T18:26:27.379296
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_108T01_9000003146_21329cztM0_level2.evt modeM0/AS1A05_108T01_9000003146_21329cztM0_level2_quad_clean.evt
Size (bytes)139,602,24024,531,840
Size133.1 MB 23.4 MB
Events in quadrant A767,115160,767
Events in quadrant B788,650164,276
Events in quadrant C766,006156,557
Events in quadrant D1,799,661147,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032071
B032621
C031661
D064171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1534211.368970%
B1533241.565558%
C1533281.826484%
D15331268.219178%

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 1534 1534 0 0 0.00% 0.00%
B 1533 1533 1 1 0.07% 0.07%
C 1533 1533 0 0 0.00% 0.00%
D 1533 1533 79 79 5.15% 5.15%

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 5 168 18953 466.15 191 186 40.3
A 9 143 10048 244.96 191 186 40.3
A 5 16 2162 49.08 191 186 40.3
B 6 36 15815 403.13 190 185 38.8
B 3 64 9775 247.34 190 185 38.8
B 4 173 6313 158.05 190 185 38.8
C 14 238 28915 620.12 189 189 46.3
C 13 61 1249 22.88 189 189 46.3
C 7 247 481 6.3 189 189 46.3
D 13 174 1002576 21654.11 184 179 46.3
D 9 68 62878 1354.44 184 179 46.3
D 1 52 32853 705.83 184 179 46.3

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