ASTROSAT CZTI

Data Quality Report

Orbit 33788

Creation date: 2024-06-27T20:52:40.939899
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_086T01_9000004820_33788cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33788cztM0_level2_quad_clean.evt
Size (bytes)696,568,32087,016,320
Size664.3 MB 83.0 MB
Events in quadrant A4,820,826574,020
Events in quadrant B3,935,299601,762
Events in quadrant C2,953,512623,857
Events in quadrant D9,030,149464,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178593
B0152132
C0118612
D0304872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A527976014.396666%
B52793907.387763%
C5279571.079750%
D5279207739.344573%

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 9254 5281 600 600 6.48% 11.36%
B 9254 5281 299 299 3.23% 5.66%
C 9254 5281 46 46 0.50% 0.87%
D 9254 5281 2161 2161 23.35% 40.92%

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 15 237 2481501 21023.21 587 577 118.0
A 15 169 21232 175.03 587 577 118.0
A 13 6 15716 128.29 587 577 118.0
B 5 172 1192206 10127.05 608 592 117.7
B 4 171 87697 740.27 608 592 117.7
B 3 112 57389 482.69 608 592 117.7
C 15 214 230243 1621.79 612 617 141.6
C 3 233 168693 1187.08 612 617 141.6
C 0 10 123314 866.58 612 617 141.6
D 12 235 5380608 40408.66 508 497 133.1
D 8 195 893463 6706.84 508 497 133.1
D 2 250 333018 2497.48 508 497 133.1

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