ASTROSAT CZTI

Data Quality Report

Orbit 00377

Creation date: 2024-06-27T13:59:16.755474
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/AS1P01_163T03_9000000056_00377cztM0_level2.evt modeM0/AS1P01_163T03_9000000056_00377cztM0_level2_quad_clean.evt
Size (bytes)749,943,36041,005,440
Size715.2 MB 39.1 MB
Events in quadrant A6,020,656249,246
Events in quadrant B6,804,846217,695
Events in quadrant C4,766,632246,708
Events in quadrant D4,850,046240,978

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207941
B0232401
C0170481
D0172931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40543699.102121%
B405491322.520967%
C405460.148002%
D4054390.962013%

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 4054 4054 672 672 16.58% 16.58%
B 4054 4054 1029 1029 25.38% 25.38%
C 4054 4054 96 96 2.37% 2.37%
D 4054 4054 153 153 3.77% 3.77%

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 69 1114470 4089.49 1206 1191 272.2
A 15 127 81994 296.82 1206 1191 272.2
A 8 192 71861 259.6 1206 1191 272.2
B 5 176 2144740 7710.82 1178 1184 278.0
B 0 230 45857 160.7 1178 1184 278.0
B 7 221 22735 77.52 1178 1184 278.0
C 10 107 370865 1201.34 1101 1137 307.8
C 3 159 47253 149.84 1101 1137 307.8
C 1 1 12423 36.67 1101 1137 307.8
D 1 5 220003 661.62 1060 1098 330.9
D 1 4 130761 391.9 1060 1098 330.9
D 13 216 63674 189.13 1060 1098 330.9

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