ASTROSAT CZTI

Data Quality Report

Orbit 17755

Creation date: 2024-06-27T17:40:31.798683
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/AS1T03_070T07_9000002644_17755cztM0_level2.evt modeM0/AS1T03_070T07_9000002644_17755cztM0_level2_quad_clean.evt
Size (bytes)720,077,76085,458,240
Size686.7 MB 81.5 MB
Events in quadrant A3,336,883604,646
Events in quadrant B4,626,544585,379
Events in quadrant C8,814,341354,910
Events in quadrant D4,575,300573,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144162
B0182082
C0304932
D0181912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6708670.998807%
B67093935.857803%
C6709303245.193024%
D67093284.888955%

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 7713 6708 11 11 0.14% 0.16%
B 7714 6709 264 264 3.42% 3.94%
C 7714 6709 2278 2278 29.53% 33.95%
D 7714 6710 246 246 3.19% 3.67%

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 15 174 240947 1479.55 804 785 162.3
A 0 226 7011 38.36 804 785 162.3
A 12 194 6094 32.71 804 785 162.3
B 10 245 1346206 8849.7 789 768 152.0
B 7 220 93617 610.72 789 768 152.0
B 0 219 56764 368.31 789 768 152.0
C 4 254 6474041 50288.81 549 552 128.7
C 14 238 83194 642.0 549 552 128.7
C 5 218 43361 332.56 549 552 128.7
D 7 238 971749 5286.63 772 754 183.7
D 5 222 371031 2015.99 772 754 183.7
D 2 165 127032 687.53 772 754 183.7

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