ASTROSAT CZTI

Data Quality Report

Orbit 01078

Creation date: 2024-06-27T14:07:06.569535
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_998T02_9000000190_01078cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01078cztM0_level2_quad_clean.evt
Size (bytes)1,104,082,560116,383,680
Size1.0 GB 111.0 MB
Events in quadrant A8,020,055771,737
Events in quadrant B8,561,193777,003
Events in quadrant C8,304,774760,572
Events in quadrant D8,082,518723,827

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05760828805
B06094030473
C05942829715
D05820829112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288144
B0288144
C0288144
D0288144

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126
B0126
C0126
D0126

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A706010.014164%
B7060280.396601%
C706020.028329%
D70592663.768239%

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 7680 7061 105 105 1.37% 1.49%
B 7680 7061 176 176 2.29% 2.49%
C 7680 7061 122 122 1.59% 1.73%
D 7680 7061 407 407 5.30% 5.76%

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 0 253 19180 33.86 2082 2095 504.5
A 12 243 12261 20.15 2082 2095 504.5
A 11 79 9512 14.7 2082 2095 504.5
B 5 191 78126 146.83 2193 2201 517.1
B 15 22 76802 144.27 2193 2201 517.1
B 5 249 37278 67.83 2193 2201 517.1
C 15 241 358964 640.3 2009 2080 557.4
C 9 52 35075 59.2 2009 2080 557.4
C 3 111 32356 54.32 2009 2080 557.4
D 10 125 745064 1283.66 1863 1926 578.9
D 12 22 143630 244.77 1863 1926 578.9
D 2 216 138129 235.27 1863 1926 578.9

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