ASTROSAT CZTI

Data Quality Report

Orbit 37475

Creation date: 2024-06-27T21:40:28.469348
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/AS1A11_027T01_9000005324_37475cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37475cztM0_level2_quad_clean.evt
Size (bytes)421,341,12097,107,840
Size401.8 MB 92.6 MB
Events in quadrant A3,561,110647,156
Events in quadrant B2,577,737673,711
Events in quadrant C2,815,765651,316
Events in quadrant D3,460,585612,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142383
B0110102
C0114792
D0138282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5080400.787402%
B5080350.688976%
C50801332.618110%
D50802524.960630%

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 6964 5081 31 31 0.45% 0.61%
B 6964 5081 22 22 0.32% 0.43%
C 6964 5081 130 130 1.87% 2.56%
D 6964 5081 226 226 3.25% 4.45%

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 15 222 873582 7608.64 571 560 114.7
A 10 83 281798 2451.07 571 560 114.7
A 9 143 79565 688.55 571 560 114.7
B 5 172 169264 1539.94 578 563 109.6
B 0 213 42402 381.92 578 563 109.6
B 0 229 31902 286.07 578 563 109.6
C 0 10 290756 2245.19 556 559 129.3
C 15 214 215073 1659.65 556 559 129.3
C 12 250 53364 408.54 556 559 129.3
D 13 249 924690 6899.7 547 531 133.9
D 12 227 135669 1008.93 547 531 133.9
D 2 153 89977 667.8 547 531 133.9

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