ASTROSAT CZTI

Data Quality Report

Orbit 26841

Creation date: 2024-06-27T19:33:33.229434
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/AS1A09_145T01_9000003866_26841cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26841cztM0_level2_quad_clean.evt
Size (bytes)868,654,08091,460,160
Size828.4 MB 87.2 MB
Events in quadrant A4,242,604619,285
Events in quadrant B7,676,987473,722
Events in quadrant C3,833,282600,182
Events in quadrant D10,035,636540,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172890
B0276880
C0159690
D0351460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76811972.564770%
B7682168721.960427%
C76822393.111169%
D7681200426.090353%

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 7776 7682 2 2 0.03% 0.03%
B 7777 7682 1249 1249 16.06% 16.26%
C 7777 7683 0 0 0.00% 0.00%
D 7776 7681 1605 1605 20.64% 20.90%

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 0 13 433388 2164.1 987 968 199.8
A 13 254 12064 55.53 987 968 199.8
A 3 137 9296 41.68 987 968 199.8
B 3 64 3856284 23374.05 854 836 164.9
B 0 189 374871 2267.63 854 836 164.9
B 7 205 67446 403.83 854 836 164.9
C 14 238 148117 659.14 942 951 223.3
C 15 208 6719 25.83 942 951 223.3
C 13 61 6434 24.56 942 951 223.3
D 7 80 2928123 13989.29 866 845 209.3
D 1 52 2712153 12957.18 866 845 209.3
D 12 227 910894 4349.07 866 845 209.3

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