ASTROSAT CZTI

Data Quality Report

Orbit 00746

Creation date: 2024-06-27T14:02:23.808567
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/AS1P01_010T01_9000000108_00746cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00746cztM0_level2_quad_clean.evt
Size (bytes)2,108,390,400149,405,760
Size2.0 GB 142.5 MB
Events in quadrant A13,300,067984,501
Events in quadrant B19,045,376886,774
Events in quadrant C12,694,268977,913
Events in quadrant D18,092,898916,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472880
B0646290
C0455500
D0616440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109451841.681133%
B10946189617.321396%
C10946970.886168%
D1094610089.208843%

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 11840 10947 588 588 4.97% 5.37%
B 11841 10948 3160 3160 26.69% 28.86%
C 11841 10948 403 403 3.40% 3.68%
D 11841 10948 2924 2924 24.69% 26.71%

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 15 233 243800 292.94 3377 3395 820.7
A 13 17 79157 92.32 3377 3395 820.7
A 15 17 16773 16.3 3377 3395 820.7
B 8 38 6183073 7946.59 3271 3278 777.7
B 7 221 257686 327.14 3271 3278 777.7
B 5 184 82908 102.4 3271 3278 777.7
C 15 241 87633 93.98 3193 3294 897.4
C 3 111 61489 64.85 3193 3294 897.4
C 3 79 48440 50.31 3193 3294 897.4
D 7 207 5488343 5848.08 3025 3139 937.9
D 12 22 404166 427.56 3025 3139 937.9
D 13 25 322243 340.21 3025 3139 937.9

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