ASTROSAT CZTI

Data Quality Report

Orbit 08947

Creation date: 2024-06-27T15:39:19.837881
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/AS1A03_092T01_9000001240_08947cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08947cztM0_level2_quad_clean.evt
Size (bytes)431,049,60097,885,440
Size411.1 MB 93.4 MB
Events in quadrant A3,193,792636,656
Events in quadrant B3,091,558642,579
Events in quadrant C2,865,076628,937
Events in quadrant D3,471,720613,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135462
B0132281
C0129971
D0144651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63491552.441329%
B63491382.173571%
C63491061.669554%
D63491852.913845%

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 7219 6349 8 8 0.11% 0.13%
B 7219 6349 2 2 0.03% 0.03%
C 7219 6349 0 0 0.00% 0.00%
D 7219 6349 51 51 0.71% 0.80%

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 8 5 174041 1106.57 766 749 156.6
A 5 16 51312 322.87 766 749 156.6
A 15 174 9848 58.1 766 749 156.6
B 0 219 50763 342.55 764 747 146.0
B 0 214 21691 143.44 764 747 146.0
B 12 111 15088 98.22 764 747 146.0
C 13 61 5586 28.77 733 734 168.6
C 1 3 3403 15.83 733 734 168.6
C 14 234 2204 8.72 733 734 168.6
D 12 233 242648 1232.87 736 719 196.2
D 1 52 149271 757.02 736 719 196.2
D 8 195 148031 750.7 736 719 196.2

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