ASTROSAT CZTI

Data Quality Report

Orbit 19413

Creation date: 2024-06-27T18:02:39.090022
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/AS1A06_009T02_9000002882_19413cztM0_level2.evt modeM0/AS1A06_009T02_9000002882_19413cztM0_level2_quad_clean.evt
Size (bytes)238,106,88039,165,120
Size227.1 MB 37.4 MB
Events in quadrant A1,592,477246,215
Events in quadrant B1,722,121250,476
Events in quadrant C1,621,791239,074
Events in quadrant D2,063,322230,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065691
B069871
C066051
D080231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3084682.204929%
B3084842.723735%
C3084852.756161%
D30841314.247730%

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 3874 3084 1 1 0.03% 0.03%
B 3874 3084 0 0 0.00% 0.00%
C 3874 3084 1 1 0.03% 0.03%
D 3874 3085 93 93 2.40% 3.01%

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 19353 227.89 406 397 83.2
A 13 254 4740 52.21 406 397 83.2
A 11 29 3912 42.26 406 397 83.2
B 4 174 116877 1475.25 403 392 79.0
B 0 230 10507 128.1 403 392 79.0
B 12 111 9106 110.36 403 392 79.0
C 14 238 60357 659.64 386 390 90.9
C 3 233 36049 392.25 386 390 90.9
C 0 207 8645 90.81 386 390 90.9
D 7 238 557259 5759.49 392 381 96.7
D 2 234 12950 129.99 392 381 96.7
D 8 195 8711 86.15 392 381 96.7

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