ASTROSAT CZTI

Data Quality Report

Orbit 38830

Creation date: 2024-06-27T21:57:34.266349
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/AS1A12_083T07_9000005406_38830cztM0_level2.fits modeM0/AS1A12_083T07_9000005406_38830cztM0_level2_quad_clean.evt
Size (bytes)109,186,56031,409,280
Size104.1 MB 30.0 MB
Events in quadrant A1,001,989211,548
Events in quadrant B879,384215,434
Events in quadrant C882,525201,737
Events in quadrant D1,130,678187,288

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040642
B037871
C037351
D045851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185550.269542%
B185520.107817%
C185520.107817%
D1855331.778976%

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 3138 1856 1 1 0.03% 0.05%
B 3138 1856 1 1 0.03% 0.05%
C 3138 1856 0 0 0.00% 0.00%
D 3138 1856 29 29 0.92% 1.56%

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 10 83 162353 3619.86 214 209 44.8
A 9 143 6599 142.65 214 209 44.8
A 7 3 4656 99.27 214 209 44.8
B 5 172 23566 532.74 211 206 43.8
B 0 230 13324 299.17 211 206 43.8
B 5 184 5859 128.92 211 206 43.8
C 15 214 78788 1584.18 204 206 49.6
C 2 16 3162 59.59 204 206 49.6
C 13 61 1360 23.26 204 206 49.6
D 12 227 140650 2705.89 203 196 51.9
D 2 249 100737 1936.95 203 196 51.9
D 10 118 44447 852.51 203 196 51.9

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