ASTROSAT CZTI

Data Quality Report

Orbit 26605

Creation date: 2024-06-27T19:30:54.894427
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/AS1A09_095T02_9000003846_26605cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26605cztM0_level2_quad_clean.evt
Size (bytes)753,736,32098,069,760
Size718.8 MB 93.5 MB
Events in quadrant A3,261,848704,217
Events in quadrant B3,525,906707,119
Events in quadrant C3,296,535667,109
Events in quadrant D12,330,654464,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134600
B0143700
C0135400
D0408380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6092891.460932%
B60931091.788938%
C60931252.051535%
D6093376461.775808%

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 7407 6093 0 0 0.00% 0.00%
B 7407 6093 7 7 0.09% 0.11%
C 7408 6094 12 12 0.16% 0.20%
D 7408 6094 3745 3745 50.55% 61.45%

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 13 18287 107.26 837 823 162.8
A 5 168 13997 80.91 837 823 162.8
A 13 254 8743 48.64 837 823 162.8
B 0 189 214712 1417.57 820 805 150.9
B 3 64 71791 470.43 820 805 150.9
B 12 111 17255 109.01 820 805 150.9
C 14 238 129935 714.75 782 788 180.7
C 2 16 41570 225.7 782 788 180.7
C 15 208 39049 211.75 782 788 180.7
D 1 52 8623999 59604.87 603 585 144.7
D 12 233 703659 4859.63 603 585 144.7
D 7 80 465324 3212.27 603 585 144.7

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