ASTROSAT CZTI

Data Quality Report

Orbit 09276

Creation date: 2024-06-27T15:43:47.460769
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/AS1G07_077T01_9000001306_09276cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09276cztM0_level2_quad_clean.evt
Size (bytes)461,327,04092,099,520
Size440.0 MB 87.8 MB
Events in quadrant A3,990,121582,286
Events in quadrant B3,064,457605,476
Events in quadrant C2,888,252605,936
Events in quadrant D3,610,328565,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160443
B0132662
C0127632
D0150092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6155751.218522%
B6155270.438668%
C6155260.422421%
D61551722.794476%

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 7415 6156 46 46 0.62% 0.75%
B 7415 6156 1 1 0.01% 0.02%
C 7415 6156 0 0 0.00% 0.00%
D 7415 6156 113 113 1.52% 1.84%

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 925929 6243.42 736 720 148.2
A 5 16 65083 434.33 736 720 148.2
A 4 2 59528 396.84 736 720 148.2
B 0 230 41751 291.05 749 730 140.9
B 0 214 32894 228.21 749 730 140.9
B 4 173 26976 186.22 749 730 140.9
C 14 67 6948 36.61 737 739 169.6
C 13 61 5507 28.11 737 739 169.6
C 8 222 3716 17.55 737 739 169.6
D 12 233 452803 2445.91 717 699 184.8
D 1 52 166681 897.97 717 699 184.8
D 2 136 89867 482.4 717 699 184.8

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