ASTROSAT CZTI

Data Quality Report

Orbit 18831

Creation date: 2024-06-27T17:55:23.238092
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_173T01_9000002812_18831cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18831cztM0_level2_quad_clean.evt
Size (bytes)448,153,92087,765,120
Size427.4 MB 83.7 MB
Events in quadrant A3,107,420579,435
Events in quadrant B3,498,436583,128
Events in quadrant C3,148,317549,199
Events in quadrant D3,422,287538,560

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123921
B0138191
C0126001
D0137501

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5834400.685636%
B58341212.074049%
C5833881.508658%
D5833791.354363%

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 7149 5835 0 0 0.00% 0.00%
B 7149 5835 19 19 0.27% 0.33%
C 7148 5834 14 14 0.20% 0.24%
D 7148 5834 50 50 0.70% 0.86%

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 8 205 30683 188.58 792 779 158.6
A 4 2 20784 126.15 792 779 158.6
A 13 254 9033 52.05 792 779 158.6
B 7 220 215538 1445.52 780 764 148.6
B 6 36 79001 526.57 780 764 148.6
B 4 216 73038 486.43 780 764 148.6
C 14 238 117279 668.87 745 753 174.2
C 0 207 82957 471.86 745 753 174.2
C 9 54 26282 146.54 745 753 174.2
D 7 38 240491 1300.12 760 742 184.4
D 1 52 143676 775.11 760 742 184.4
D 12 233 78550 421.94 760 742 184.4

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