ASTROSAT CZTI

Data Quality Report

Orbit 06435

Creation date: 2024-06-27T15:07:11.806248
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/AS1A02_191T01_9000000854_06435cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06435cztM0_level2_quad_clean.evt
Size (bytes)234,524,16046,713,600
Size223.7 MB 44.5 MB
Events in quadrant A1,629,796294,933
Events in quadrant B1,784,115302,626
Events in quadrant C1,604,108292,474
Events in quadrant D1,847,876279,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070812
B075651
C070631
D077581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3460270.780347%
B3460631.820809%
C3460220.635838%
D3460481.387283%

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 4360 3460 0 0 0.00% 0.00%
B 4360 3460 11 11 0.25% 0.32%
C 4360 3460 0 0 0.00% 0.00%
D 4360 3460 15 15 0.34% 0.43%

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 0 226 4015 41.05 422 413 87.8
A 12 194 3944 40.24 422 413 87.8
A 8 15 2960 29.02 422 413 87.8
B 0 228 127293 1532.74 420 409 82.8
B 15 204 18159 214.42 420 409 82.8
B 12 111 8183 93.91 420 409 82.8
C 8 128 5454 52.63 407 408 95.9
C 1 16 3719 34.53 407 408 95.9
C 13 61 3220 29.33 407 408 95.9
D 2 152 207977 2033.05 408 395 102.1
D 2 136 24135 232.51 408 395 102.1
D 2 206 18824 180.49 408 395 102.1

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