ASTROSAT CZTI

Data Quality Report

Orbit 32129

Creation date: 2024-06-27T20:36:48.669203
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/AS1T04_051T01_9000004686_32129cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32129cztM0_level2_quad_clean.evt
Size (bytes)629,366,40094,645,440
Size600.2 MB 90.3 MB
Events in quadrant A3,123,467623,386
Events in quadrant B6,724,863595,601
Events in quadrant C3,450,553603,884
Events in quadrant D5,312,408579,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135152
B0245431
C0143911
D0203261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6648110.165463%
B66494907.369529%
C66491952.932772%
D66492083.128290%

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 7523 6649 0 0 0.00% 0.00%
B 7524 6650 324 324 4.31% 4.87%
C 7524 6650 38 38 0.51% 0.57%
D 7524 6650 207 207 2.75% 3.11%

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 13 6 20118 118.85 802 785 162.7
A 13 254 14850 86.46 802 785 162.7
A 3 137 8184 45.49 802 785 162.7
B 6 159 1953565 13101.45 780 760 149.1
B 10 245 1301542 8727.0 780 760 149.1
B 5 172 239957 1604.78 780 760 149.1
C 0 10 225897 1242.17 759 762 181.2
C 14 238 159715 877.02 759 762 181.2
C 14 254 54593 297.01 759 762 181.2
D 8 195 1400586 7685.58 760 741 182.1
D 12 233 780260 4279.8 760 741 182.1
D 12 218 99781 543.76 760 741 182.1

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