ASTROSAT CZTI

Data Quality Report

Orbit 41861

Creation date: 2024-06-27T22:33:45.175205
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/AS1C07_001T11_9000005710_41861cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41861cztM0_level2_quad_clean.evt
Size (bytes)450,406,08085,288,320
Size429.5 MB 81.3 MB
Events in quadrant A4,353,026563,819
Events in quadrant B2,476,533602,038
Events in quadrant C3,105,586563,143
Events in quadrant D6,309,510467,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166602
B0114912
C0129072
D0225632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55063285.957138%
B5506240.435888%
C55072494.521518%
D550795317.305248%

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 8731 5508 215 215 2.46% 3.90%
B 8731 5508 10 10 0.11% 0.18%
C 8732 5509 253 253 2.90% 4.59%
D 8732 5509 1010 1010 11.57% 18.33%

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 14 24 1543955 13162.51 570 558 117.3
A 10 83 546442 4655.45 570 558 117.3
A 2 79 52602 443.85 570 558 117.3
B 0 245 48490 421.0 581 565 113.8
B 5 255 44399 385.06 581 565 113.8
B 5 32 36124 312.37 581 565 113.8
C 0 10 685356 5315.27 553 556 128.8
C 15 214 218613 1692.51 553 556 128.8
C 15 111 28654 218.09 553 556 128.8
D 12 79 2886591 22232.74 533 518 129.8
D 13 249 626165 4819.65 533 518 129.8
D 12 250 223698 1719.26 533 518 129.8

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