ASTROSAT CZTI

Data Quality Report

Orbit 05735

Creation date: 2024-06-27T14:58:30.671684
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/AS1A02_150T01_9000000738_05735cztM0_level2.evt modeM0/AS1A02_150T01_9000000738_05735cztM0_level2_quad_clean.evt
Size (bytes)278,447,04045,630,720
Size265.5 MB 43.5 MB
Events in quadrant A1,899,698272,688
Events in quadrant B2,278,334274,736
Events in quadrant C1,867,150276,377
Events in quadrant D2,106,428267,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085029
B094765
C085105
D0906811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4114832.017501%
B41161122.721088%
C4116461.117590%
D4113551.337223%

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 4928 4119 0 0 0.00% 0.00%
B 4928 4119 0 0 0.00% 0.00%
C 4928 4119 0 0 0.00% 0.00%
D 4928 4119 3 3 0.06% 0.07%

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 12 194 4807 42.64 492 481 101.4
A 0 226 4750 42.08 492 481 101.4
A 14 31 3155 26.36 492 481 101.4
B 5 172 279052 2831.9 497 486 98.4
B 11 51 28591 285.72 497 486 98.4
B 15 204 23772 236.73 497 486 98.4
C 14 67 4649 37.14 477 479 112.3
C 13 61 3734 28.99 477 479 112.3
C 12 4 2258 15.84 477 479 112.3
D 1 20 139961 1157.88 482 466 120.5
D 4 95 58017 477.7 482 466 120.5
D 12 233 25861 210.79 482 466 120.5

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