ASTROSAT CZTI

Data Quality Report

Orbit 35159

Creation date: 2022-03-30T17:38:34.095741
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_069T05_9000005038_35159cztM0_level2.evt modeM0/AS1A11_069T05_9000005038_35159cztM0_level2_quad_clean.evt
Size (bytes)637,928,64073,319,040
Size608.4 MB 69.9 MB
Events in quadrant A2,976,027503,405
Events in quadrant B4,689,073471,516
Events in quadrant C3,363,078484,943
Events in quadrant D7,934,767389,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119853
B0175342
C0130732
D0273352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5281270.511267%
B528159711.304677%
C52811432.707820%
D5281140826.661617%

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 9077 5283 4 4 0.04% 0.08%
B 9077 5283 354 354 3.90% 6.70%
C 9077 5283 100 100 1.10% 1.89%
D 9077 5283 1321 1321 14.55% 25.00%

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 10 83 91818 642.14 715 705 141.9
A 9 143 59359 413.38 715 705 141.9
A 15 169 45190 313.52 715 705 141.9
B 5 236 1808133 14238.44 673 658 126.9
B 5 172 136436 1069.6 673 658 126.9
B 4 232 46787 363.38 673 658 126.9
C 0 10 280910 1830.45 670 677 153.1
C 15 214 223835 1457.64 670 677 153.1
C 0 207 155690 1012.53 670 677 153.1
D 7 80 3160265 21060.5 620 605 150.0
D 8 195 1783956 11886.81 620 605 150.0
D 12 79 202188 1343.64 620 605 150.0

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