ASTROSAT CZTI

Data Quality Report

Orbit 14769

Creation date: 2024-06-27T16:59:29.156363
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/AS1A04_022T06_9000002182_14769cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14769cztM0_level2_quad_clean.evt
Size (bytes)627,062,400102,899,520
Size598.0 MB 98.1 MB
Events in quadrant A4,338,376656,066
Events in quadrant B4,185,524658,227
Events in quadrant C5,496,006608,076
Events in quadrant D4,425,874634,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182643
B0177142
C0215662
D0188102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80411872.325581%
B80411251.554533%
C80415837.250342%
D8041821.019774%

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 8602 8044 61 61 0.71% 0.76%
B 8602 8044 19 19 0.22% 0.24%
C 8602 8044 340 340 3.95% 4.23%
D 8602 8044 32 32 0.37% 0.40%

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 14 237 363446 1840.59 964 942 196.9
A 12 189 177583 896.88 964 942 196.9
A 0 23 47738 237.6 964 942 196.9
B 4 216 63075 333.76 975 948 186.1
B 4 142 54808 289.35 975 948 186.1
B 10 246 54684 288.68 975 948 186.1
C 4 254 1344086 6310.22 913 917 212.9
C 3 233 467944 2194.1 913 917 212.9
C 7 247 89126 414.41 913 917 212.9
D 8 195 536639 2130.97 937 915 251.4
D 15 0 114621 452.29 937 915 251.4
D 2 136 94945 374.03 937 915 251.4

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