ASTROSAT CZTI

Data Quality Report

Orbit 32912

Creation date: 2024-06-27T20:43:22.979301
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/AS1C07_005T01_9000004748_32912cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32912cztM0_level2_quad_clean.evt
Size (bytes)531,936,000100,690,560
Size507.3 MB 96.0 MB
Events in quadrant A2,613,324685,761
Events in quadrant B2,923,948695,401
Events in quadrant C3,045,018670,953
Events in quadrant D7,151,140608,082

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115373
B0122852
C0127242
D0251292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5558200.359842%
B5558611.097517%
C55581011.817200%
D555857410.327456%

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 7261 5559 9 9 0.12% 0.16%
B 7261 5559 26 26 0.36% 0.47%
C 7261 5559 97 97 1.34% 1.74%
D 7261 5559 618 618 8.51% 11.12%

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 9 143 46837 359.38 647 635 128.6
A 15 169 42061 322.23 647 635 128.6
A 13 6 17233 129.11 647 635 128.6
B 5 172 187504 1511.98 652 638 123.6
B 0 219 49046 391.68 652 638 123.6
B 0 230 33175 263.27 652 638 123.6
C 0 10 312085 2177.93 619 622 143.0
C 14 67 136586 950.74 619 622 143.0
C 1 241 112677 783.55 619 622 143.0
D 8 195 2441030 15784.18 596 583 154.6
D 10 203 724275 4680.65 596 583 154.6
D 12 227 645732 4172.66 596 583 154.6

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