ASTROSAT CZTI

Data Quality Report

Orbit 34686

Creation date: 2022-07-18T18:19:37.421811
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/AS1T04_078T01_9000004962_34686cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34686cztM0_level2_quad_clean.evt
Size (bytes)262,128,96021,268,800
Size250.0 MB 20.3 MB
Events in quadrant A1,374,799113,795
Events in quadrant B1,659,065113,888
Events in quadrant C1,647,011111,695
Events in quadrant D3,067,430105,099

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057711
B066541
C064571
D0111141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2780140.503597%
B2780883.165468%
C2780551.978417%
D27802659.532374%

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 2780 2780 6 6 0.22% 0.22%
B 2780 2780 48 48 1.73% 1.73%
C 2780 2780 52 52 1.87% 1.87%
D 2780 2780 215 215 7.73% 7.73%

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 9 143 39930 578.28 333 327 68.5
A 10 83 24267 349.57 333 327 68.5
A 13 6 10798 152.9 333 327 68.5
B 5 255 192859 3043.66 325 317 63.3
B 5 172 108587 1711.51 325 317 63.3
B 0 218 19230 298.97 325 317 63.3
C 15 214 119409 1588.98 317 319 74.9
C 0 10 100514 1336.87 317 319 74.9
C 15 208 64435 855.48 317 319 74.9
D 8 195 878652 10258.27 311 304 85.6
D 7 38 461083 5381.46 311 304 85.6
D 2 120 176822 2061.56 311 304 85.6

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