ASTROSAT CZTI

Data Quality Report

Orbit 07911

Creation date: 2024-06-27T15:25:22.594278
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_029T01_9000001082_07911cztM0_level2.evt modeM0/AS1A02_029T01_9000001082_07911cztM0_level2_quad_clean.evt
Size (bytes)2,826,325,440442,944,000
Size2.6 GB 422.4 MB
Events in quadrant A18,520,6022,721,408
Events in quadrant B18,583,0922,800,802
Events in quadrant C24,938,4332,728,373
Events in quadrant D21,025,2462,589,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0803787
B08011715
C010013610
D08889111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07620
B07620
C07620
D07620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3747510572.820547%
B374719312.484588%
C374749692.585793%
D3747317124.568623%

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 39925 37483 201 201 0.50% 0.54%
B 39925 37484 101 101 0.25% 0.27%
C 39925 37484 163 163 0.41% 0.43%
D 39925 37484 930 930 2.33% 2.48%

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 1037087 1163.13 4378 4276 888.0
A 0 128 274940 304.82 4378 4276 888.0
A 15 234 241762 267.45 4378 4276 888.0
B 4 239 373007 441.52 4422 4313 835.1
B 4 173 264248 311.28 4422 4313 835.1
B 15 255 129923 150.42 4422 4313 835.1
C 1 16 8091053 8196.23 4288 4303 986.6
C 12 4 42738 38.96 4288 4303 986.6
C 13 61 32998 29.08 4288 4303 986.6
D 1 52 3753079 3601.31 4260 4120 1041.0
D 4 95 383888 364.81 4260 4120 1041.0
D 2 14 317743 301.27 4260 4120 1041.0

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