ASTROSAT CZTI

Data Quality Report

Orbit 25929

Creation date: 2024-06-27T19:22:56.628115
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/AS1T03_214T01_9000003758_25929cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25929cztM0_level2_quad_clean.evt
Size (bytes)1,655,893,440145,935,360
Size1.5 GB 139.2 MB
Events in quadrant A31,660,884205,502
Events in quadrant B5,781,0311,172,379
Events in quadrant C5,690,1871,120,456
Events in quadrant D6,229,8921,109,493

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01023360
B0252930
C0250000
D0271870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01713
B073
C0106
D0117

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121361207199.464403%
B12227530.433467%
C12230900.735895%
D12196600.491965%

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 13268 12141 11379 11379 85.76% 93.72%
B 13267 12267 1 1 0.01% 0.01%
C 13267 12270 0 0 0.00% 0.00%
D 13269 12236 31 31 0.23% 0.25%

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 13 30110876 375647.41 400 393 80.2
A 13 254 5914 68.88 400 393 80.2
A 3 137 3418 37.74 400 393 80.2
B 0 190 66589 239.15 1435 1399 272.6
B 0 219 62762 225.11 1435 1399 272.6
B 12 111 33486 117.71 1435 1399 272.6
C 14 238 218555 674.0 1374 1376 322.2
C 3 233 93221 285.03 1374 1376 322.2
C 2 16 27263 80.34 1374 1376 322.2
D 1 52 892486 2616.69 1382 1345 340.6
D 2 234 53810 154.06 1382 1345 340.6
D 7 80 47935 136.8 1382 1345 340.6

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