ASTROSAT CZTI

Data Quality Report

Orbit 32027

Creation date: 2024-06-27T20:35:24.222714
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/AS1A10_109T01_9000004678_32027cztM0_level2.evt modeM0/AS1A10_109T01_9000004678_32027cztM0_level2_quad_clean.evt
Size (bytes)1,070,706,240183,041,280
Size1021.1 MB 174.6 MB
Events in quadrant A5,934,4961,224,708
Events in quadrant B10,858,2891,172,462
Events in quadrant C6,891,6201,158,338
Events in quadrant D7,904,8591,130,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257272
B0413412
C0284882
D0319164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12413570.459196%
B124146825.493797%
C124142702.174964%
D124131941.562878%

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 13813 12413 0 0 0.00% 0.00%
B 13814 12414 335 335 2.43% 2.70%
C 13814 12415 80 80 0.58% 0.64%
D 13813 12414 130 130 0.94% 1.05%

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 13 6 26633 81.32 1529 1501 309.0
A 13 254 24041 72.94 1529 1501 309.0
A 3 137 15122 44.08 1529 1501 309.0
B 6 159 3333121 11826.91 1478 1442 281.7
B 12 18 1285538 4558.33 1478 1442 281.7
B 0 190 238884 842.88 1478 1442 281.7
C 0 10 467467 1362.04 1457 1472 342.1
C 3 233 426164 1241.32 1457 1472 342.1
C 14 238 238074 691.56 1457 1472 342.1
D 8 195 1246449 3512.06 1472 1435 354.5
D 12 218 381510 1072.15 1472 1435 354.5
D 2 250 352936 991.55 1472 1435 354.5

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