ASTROSAT CZTI

Data Quality Report

Orbit 33116

Creation date: 2024-06-27T20:45:00.824454
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/AS1A11_008T06_9000004762_33116cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33116cztM0_level2_quad_clean.evt
Size (bytes)575,020,80074,577,600
Size548.4 MB 71.1 MB
Events in quadrant A2,616,871505,007
Events in quadrant B3,965,219478,779
Events in quadrant C3,079,707493,571
Events in quadrant D7,386,973401,873

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110413
B0150722
C0124262
D0258152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5404120.222058%
B54044257.864545%
C5404841.554404%
D5404125823.279053%

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 7167 5405 0 0 0.00% 0.00%
B 7167 5405 309 309 4.31% 5.72%
C 7167 5405 58 58 0.81% 1.07%
D 7167 5405 1185 1185 16.53% 21.92%

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 7 16 9825 68.84 672 659 133.1
A 13 254 9807 68.71 672 659 133.1
A 3 137 5995 40.08 672 659 133.1
B 5 172 1206796 9901.41 644 629 121.8
B 5 255 62863 510.88 644 629 121.8
B 0 197 25942 207.79 644 629 121.8
C 8 111 220831 1500.43 640 649 146.7
C 7 221 150466 1020.92 640 649 146.7
C 0 10 144775 982.14 640 649 146.7
D 7 223 3389258 23692.2 589 577 143.0
D 8 195 660151 4611.46 589 577 143.0
D 12 6 328928 2295.69 589 577 143.0

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