ASTROSAT CZTI

Data Quality Report

Orbit 31100

Creation date: 2024-06-27T20:23:21.845372
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_9000004492_31100cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31100cztM0_level2_quad_clean.evt
Size (bytes)1,019,188,800159,491,520
Size972.0 MB 152.1 MB
Events in quadrant A5,880,4921,019,005
Events in quadrant B9,376,2641,012,213
Events in quadrant C6,634,769978,740
Events in quadrant D8,132,829957,871

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253402
B0375094
C0274962
D0322902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124811080.865315%
B124801901.522436%
C124802832.267628%
D124811871.498277%

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 13592 12483 0 0 0.00% 0.00%
B 13591 12482 2 2 0.01% 0.02%
C 13591 12482 33 33 0.24% 0.26%
D 13592 12483 72 72 0.53% 0.58%

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 13 254 20640 62.46 1524 1494 306.5
A 3 137 15980 47.26 1524 1494 306.5
A 0 226 12586 36.19 1524 1494 306.5
B 6 159 3383688 11768.59 1498 1457 287.4
B 0 183 44297 149.06 1498 1457 287.4
B 12 111 37129 124.12 1498 1457 287.4
C 10 22 373436 1081.9 1457 1467 343.8
C 14 238 234515 677.84 1457 1467 343.8
C 0 10 215304 621.96 1457 1467 343.8
D 13 174 1807523 5196.55 1466 1426 347.6
D 8 195 695662 1997.47 1466 1426 347.6
D 2 250 72656 204.94 1466 1426 347.6

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