ASTROSAT CZTI

Data Quality Report

Orbit 06682

Creation date: 2024-06-27T15:10:15.635488
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/AS1G06_102T01_9000000912_06682cztM0_level2.evt modeM0/AS1G06_102T01_9000000912_06682cztM0_level2_quad_clean.evt
Size (bytes)1,992,173,760238,144,320
Size1.9 GB 227.1 MB
Events in quadrant A12,004,6191,451,928
Events in quadrant B11,534,8671,459,400
Events in quadrant C9,971,9011,451,523
Events in quadrant D25,327,1761,322,045

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0505325
B0490854
C0454044
D0906694

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221855582.515213%
B221853961.784990%
C221852331.050259%
D22185441519.900834%

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 25135 22189 174 174 0.69% 0.78%
B 25135 22189 61 61 0.24% 0.27%
C 25135 22189 10 10 0.04% 0.05%
D 25135 22189 3404 3404 13.54% 15.34%

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 13 251 1647024 3137.66 2575 2514 524.1
A 14 111 264292 499.46 2575 2514 524.1
A 8 15 109244 203.64 2575 2514 524.1
B 0 228 638743 1288.88 2598 2536 493.6
B 0 219 259125 519.82 2598 2536 493.6
B 0 214 195900 391.73 2598 2536 493.6
C 4 254 114161 191.55 2515 2526 582.8
C 9 16 23275 35.6 2515 2526 582.8
C 13 61 20053 30.07 2515 2526 582.8
D 2 33 8816242 15839.51 2281 2207 556.5
D 8 195 4392997 7890.59 2281 2207 556.5
D 12 221 1489465 2672.72 2281 2207 556.5

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