ASTROSAT CZTI

Data Quality Report

Orbit 07883

Creation date: 2024-06-27T15:25:10.835269
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/AS1A02_071T01_9000001078_07883cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07883cztM0_level2_quad_clean.evt
Size (bytes)2,807,735,040513,198,720
Size2.6 GB 489.4 MB
Events in quadrant A20,508,8573,195,382
Events in quadrant B20,774,3663,259,545
Events in quadrant C19,176,9723,226,352
Events in quadrant D21,787,6463,032,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08360
B08360
C08360
D08360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0893927
B0895176
C0857846
D0938636

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4121614423.498641%
B4121613083.173525%
C412166391.550369%
D4121613743.333657%

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 44781 41221 403 403 0.90% 0.98%
B 44781 41222 264 264 0.59% 0.64%
C 44781 41222 0 0 0.00% 0.00%
D 44781 41222 515 515 1.15% 1.25%

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 15 239 1699132 1759.4 4784 4682 963.1
A 15 174 200514 203.34 4784 4682 963.1
A 15 223 78458 76.6 4784 4682 963.1
B 4 239 1554160 1674.28 4843 4719 925.4
B 11 51 120391 124.99 4843 4719 925.4
B 12 111 94339 96.84 4843 4719 925.4
C 1 16 709103 648.11 4729 4745 1086.8
C 13 61 36383 29.11 4729 4745 1086.8
C 12 4 24465 18.15 4729 4745 1086.8
D 13 112 1443329 1260.15 4683 4540 1141.8
D 13 104 642015 558.33 4683 4540 1141.8
D 2 136 393778 340.91 4683 4540 1141.8

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