ASTROSAT CZTI

Data Quality Report

Orbit 32201

Creation date: 2024-06-27T20:37:31.945916
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_057T01_9000004692_32201cztM0_level2.evt modeM0/AS1A10_057T01_9000004692_32201cztM0_level2_quad_clean.evt
Size (bytes)417,061,44042,929,280
Size397.7 MB 40.9 MB
Events in quadrant A1,846,451276,315
Events in quadrant B3,420,677275,446
Events in quadrant C2,340,534268,904
Events in quadrant D4,767,486212,854

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077882
B0127251
C093871
D0167521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3753491.305622%
B37533589.539035%
C37532005.329070%
D3753121732.427391%

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 4543 3754 0 0 0.00% 0.00%
B 4543 3754 140 140 3.08% 3.73%
C 4543 3754 21 21 0.46% 0.56%
D 4543 3753 868 868 19.11% 23.13%

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 8123 79.77 474 464 96.0
A 15 174 6218 59.93 474 464 96.0
A 13 6 5188 49.2 474 464 96.0
B 6 159 1024195 11669.16 447 435 87.7
B 5 172 518960 5910.32 447 435 87.7
B 0 229 33538 377.32 447 435 87.7
C 3 233 379147 3559.59 447 450 106.4
C 0 10 107574 1006.92 447 450 106.4
C 14 238 76552 715.33 447 450 106.4
D 12 218 2281862 24571.14 386 375 92.9
D 12 233 320679 3449.61 386 375 92.9
D 14 52 219796 2363.12 386 375 92.9

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