ASTROSAT CZTI

Data Quality Report

Orbit 35441

Creation date: 2022-04-22T12:41:34.133762
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_097T17_9000005074_35441cztM0_level2.evt modeM0/AS1A11_097T17_9000005074_35441cztM0_level2_quad_clean.evt
Size (bytes)692,740,80079,871,040
Size660.6 MB 76.2 MB
Events in quadrant A3,027,616504,830
Events in quadrant B8,401,974482,911
Events in quadrant C5,087,397500,867
Events in quadrant D4,030,853483,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130366
B02953211
C0191763
D0161927

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398100.156299%
B6397105516.492106%
C63995067.907486%
D63962083.252033%

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 9087 6401 0 0 0.00% 0.00%
B 9087 6401 590 590 6.49% 9.22%
C 9087 6402 342 342 3.76% 5.34%
D 9087 6401 152 152 1.67% 2.37%

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 133363 883.92 743 725 150.1
A 13 6 12428 77.99 743 725 150.1
A 8 6 12252 76.82 743 725 150.1
B 4 251 4765557 34514.84 711 693 138.1
B 5 236 381916 2761.43 711 693 138.1
B 5 200 213606 1542.26 711 693 138.1
C 4 254 1062672 6558.49 695 700 161.9
C 0 207 516063 3182.76 695 700 161.9
C 0 10 453082 2793.81 695 700 161.9
D 13 249 318801 1831.26 713 693 173.7
D 2 153 250136 1435.97 713 693 173.7
D 12 6 237217 1361.6 713 693 173.7

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