ASTROSAT CZTI

Data Quality Report

Orbit 34626

Creation date: 2022-02-23T11:23:23.720456
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_058T02_9000004954_34626cztM0_level2.evt modeM0/AS1A11_058T02_9000004954_34626cztM0_level2_quad_clean.evt
Size (bytes)363,300,48040,104,000
Size346.5 MB 38.2 MB
Events in quadrant A1,926,984248,471
Events in quadrant B2,642,675241,956
Events in quadrant C2,072,652241,913
Events in quadrant D4,103,439214,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079191
B0101601
C081251
D0147701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A377560.158940%
B37751473.894040%
C3775260.688742%
D37752777.337748%

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 3775 3775 2 2 0.05% 0.05%
B 3775 3775 95 95 2.52% 2.52%
C 3775 3775 18 18 0.48% 0.48%
D 3775 3775 257 257 6.81% 6.81%

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 10 83 25166 259.01 479 472 95.3
A 15 169 19849 203.24 479 472 95.3
A 9 143 10230 102.35 479 472 95.3
B 5 172 712165 8070.28 467 456 88.2
B 4 171 39345 440.97 467 456 88.2
B 4 232 19773 219.04 467 456 88.2
C 15 214 155610 1473.48 458 463 105.3
C 0 10 89315 843.85 458 463 105.3
C 14 67 18864 174.76 458 463 105.3
D 8 195 1398716 12558.35 452 441 111.3
D 3 13 302566 2713.48 452 441 111.3
D 13 249 228400 2047.37 452 441 111.3

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