ASTROSAT CZTI

Data Quality Report

Orbit 14602

Creation date: 2024-06-27T16:57:21.404673
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/AS1G08_055T02_9000002148_14602cztM0_level2.evt modeM0/AS1G08_055T02_9000002148_14602cztM0_level2_quad_clean.evt
Size (bytes)638,533,44087,825,600
Size609.0 MB 83.8 MB
Events in quadrant A7,833,307542,868
Events in quadrant B3,496,408561,924
Events in quadrant C3,900,882552,642
Events in quadrant D3,664,624545,015

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279463
B0147512
C0158542
D0152052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65606289.573171%
B65601051.600610%
C6560781.189024%
D65601732.637195%

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 8831 6561 46 46 0.52% 0.70%
B 8831 6561 3 3 0.03% 0.05%
C 8831 6561 0 0 0.00% 0.00%
D 8831 6562 78 78 0.88% 1.19%

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 23 3981360 23193.68 852 836 171.6
A 0 226 243131 1411.8 852 836 171.6
A 1 162 124342 719.64 852 836 171.6
B 0 197 38858 227.7 867 847 166.9
B 0 205 21617 124.42 867 847 166.9
B 0 189 21054 121.05 867 847 166.9
C 3 233 585380 2988.72 850 856 195.6
C 13 61 6019 26.4 850 856 195.6
C 14 234 3289 12.44 850 856 195.6
D 10 199 207138 1030.43 846 827 200.2
D 13 122 100507 497.86 846 827 200.2
D 2 152 64218 316.61 846 827 200.2

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