ASTROSAT CZTI

Data Quality Report

Orbit 14724

Creation date: 2024-06-27T16:58:56.707015
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/AS1A04_048T01_9000002176_14724cztM0_level2.evt modeM0/AS1A04_048T01_9000002176_14724cztM0_level2_quad_clean.evt
Size (bytes)542,001,600106,030,080
Size516.9 MB 101.1 MB
Events in quadrant A3,580,954696,401
Events in quadrant B3,528,241693,288
Events in quadrant C4,095,073671,618
Events in quadrant D4,715,884642,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152993
B0152782
C0167552
D0191662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7286570.782322%
B7286610.837222%
C7286610.837222%
D72863594.927258%

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 7582 7288 12 12 0.16% 0.16%
B 7582 7288 5 5 0.07% 0.07%
C 7582 7288 30 30 0.40% 0.41%
D 7582 7288 360 360 4.75% 4.94%

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 12 189 106380 591.05 870 850 178.5
A 8 15 40956 224.62 870 850 178.5
A 15 69 32805 178.97 870 850 178.5
B 0 230 21910 126.0 867 845 167.2
B 0 205 20936 120.17 867 845 167.2
B 12 111 18544 105.86 867 845 167.2
C 3 233 663105 3433.51 828 829 192.9
C 4 254 196015 1011.92 828 829 192.9
C 13 61 6109 27.37 828 829 192.9
D 1 255 1171865 5736.36 822 798 204.1
D 10 199 104308 507.03 822 798 204.1
D 15 0 97423 473.31 822 798 204.1

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