ASTROSAT CZTI

Data Quality Report

Orbit 09351

Creation date: 2024-06-27T15:44:48.793261
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/AS1G07_022T01_9000001322_09351cztM0_level2.evt modeM0/AS1G07_022T01_9000001322_09351cztM0_level2_quad_clean.evt
Size (bytes)517,561,92089,406,720
Size493.6 MB 85.3 MB
Events in quadrant A4,161,231576,715
Events in quadrant B3,104,849599,097
Events in quadrant C2,774,387578,324
Events in quadrant D5,219,574527,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017047540
B013529284
C012969301
D020495825

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01328
B01322
C01320
D01322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251
B0251
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60831822.991945%
B6116560.915631%
C6115310.506950%
D604776712.683976%

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 8840 6230 68 68 0.77% 1.09%
B 8839 6232 7 7 0.08% 0.11%
C 8840 6239 9 9 0.10% 0.14%
D 8840 6220 669 669 7.57% 10.76%

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 8 5 764965 5235.23 719 704 146.0
A 0 8 493612 3376.45 719 704 146.0
A 13 251 37311 250.76 719 704 146.0
B 4 80 60751 426.94 736 720 140.6
B 0 219 44914 314.31 736 720 140.6
B 10 245 32556 226.42 736 720 140.6
C 10 22 41296 251.23 697 698 161.6
C 14 67 8053 45.51 697 698 161.6
C 13 61 5294 28.44 697 698 161.6
D 12 227 2337238 13684.17 649 632 170.8
D 1 52 195184 1139.38 649 632 170.8
D 7 71 46428 268.2 649 632 170.8

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