ASTROSAT CZTI

Data Quality Report

Orbit 20211022_A11_044T01_9000004732_level2

Creation date: 2025-12-29T15:10:07.188758
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/AS1A11_044T01_9000004732cztM0_level2.fits modeM0/AS1A11_044T01_9000004732cztM0_level2_quad_clean.evt
Size (bytes)594,835,200762,353,280
Size567.3 MB 727.0 MB
Events in quadrant A3,665,6364,982,592
Events in quadrant B3,479,7524,903,524
Events in quadrant C3,645,4424,922,333
Events in quadrant D2,924,1843,984,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01394690
B01567530
C01383520
D02750540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012840
B012840
C012840
D012840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626138971.432610%
B6261325774.115759%
C626137001.117979%
D62613785012.537333%

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 86657 62598 0 0 0.00% 0.00%
B 86657 62580 0 0 0.00% 0.00%
C 86657 62606 0 0 0.00% 0.00%
D 86657 62574 0 0 0.00% 0.00%

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 7 110 3008 9.03 958 908 232.5
A 9 19 2981 8.92 958 908 232.5
A 0 29 2884 8.5 958 908 232.5
B 2 9 2977 11.73 926 890 177.9
B 3 80 2644 9.86 926 890 177.9
B 5 128 2413 8.56 926 890 177.9
C 1 81 3321 9.93 967 917 242.0
C 1 80 3078 8.93 967 917 242.0
C 3 187 2609 6.99 967 917 242.0
D 6 67 2184 6.4 840 770 221.0
D 10 113 2169 6.33 840 770 221.0
D 4 160 2139 6.2 840 770 221.0

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