ASTROSAT CZTI

Data Quality Report

Orbit 40328

Creation date: 2024-06-27T22:14:58.219882
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/AS1A12_056T02_9000005538_40328cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40328cztM0_level2_quad_clean.evt
Size (bytes)482,826,24090,552,960
Size460.5 MB 86.4 MB
Events in quadrant A3,390,230667,024
Events in quadrant B2,993,717670,862
Events in quadrant C2,725,028658,601
Events in quadrant D8,344,205368,334

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132553
B0122402
C0112622
D0284592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5391961.780746%
B53911502.782415%
C539170.129846%
D5391229642.589501%

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 7273 5392 73 73 1.00% 1.35%
B 7273 5392 129 129 1.77% 2.39%
C 7273 5392 6 6 0.08% 0.11%
D 7273 5391 2194 2194 30.17% 40.70%

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 10 83 452855 3517.53 635 623 128.6
A 13 248 313246 2431.63 635 623 128.6
A 12 189 67690 521.66 635 623 128.6
B 5 255 203414 1727.76 622 606 117.4
B 4 170 119831 1015.7 622 606 117.4
B 3 112 114329 968.83 622 606 117.4
C 15 214 245111 1706.68 617 623 143.3
C 14 254 69821 483.05 617 623 143.3
C 0 10 4285 25.56 617 623 143.3
D 12 227 3315791 29942.39 447 434 110.7
D 1 47 3192235 28826.5 447 434 110.7
D 2 250 32171 286.63 447 434 110.7

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