ASTROSAT CZTI

Data Quality Report

Orbit 35302

Creation date: 2022-04-09T08:44:00.813607
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_082T01_9000005056_35302cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35302cztM0_level2_quad_clean.evt
Size (bytes)317,315,52052,436,160
Size302.6 MB 50.0 MB
Events in quadrant A1,944,421345,875
Events in quadrant B3,581,998333,424
Events in quadrant C1,795,587349,675
Events in quadrant D2,069,353330,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080041
B0128261
C072451
D082951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3204521.622971%
B320458918.383271%
C3204571.779026%
D32041043.245943%

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 3204 3204 46 46 1.44% 1.44%
B 3204 3204 494 494 15.42% 15.42%
C 3204 3204 41 41 1.28% 1.28%
D 3204 3204 96 96 3.00% 3.00%

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 15 169 369757 5129.2 353 346 72.0
A 7 16 134584 1863.87 353 346 72.0
A 10 83 50869 701.5 353 346 72.0
B 5 236 1914887 29728.06 332 323 64.4
B 5 172 347231 5386.55 332 323 64.4
B 4 232 12127 183.28 332 323 64.4
C 0 10 244546 2922.51 354 358 83.6
C 15 214 132067 1576.33 354 358 83.6
C 9 69 17787 208.59 354 358 83.6
D 7 80 341460 4013.2 349 338 85.0
D 2 250 159291 1870.03 349 338 85.0
D 13 249 100973 1183.94 349 338 85.0

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