ASTROSAT CZTI

Data Quality Report

Orbit 37594

Creation date: 2024-06-27T21:41:57.855648
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/AS1T05_053T01_9000005338_37594cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37594cztM0_level2_quad_clean.evt
Size (bytes)406,609,92058,547,520
Size387.8 MB 55.8 MB
Events in quadrant A2,598,153367,943
Events in quadrant B4,191,672343,911
Events in quadrant C2,630,214367,929
Events in quadrant D2,558,685346,638

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107363
B0156552
C0107112
D0110392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4934180.364816%
B493463012.768545%
C4934661.337657%
D4934490.993109%

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 7088 4935 12 12 0.17% 0.24%
B 7088 4935 578 578 8.15% 11.71%
C 7088 4935 73 73 1.03% 1.48%
D 7088 4935 53 53 0.75% 1.07%

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 10 83 293440 2526.15 575 564 115.9
A 9 143 45828 390.42 575 564 115.9
A 13 6 13151 108.57 575 564 115.9
B 5 255 1687146 15871.51 550 537 106.3
B 5 172 174754 1639.43 550 537 106.3
B 4 81 58407 544.57 550 537 106.3
C 0 10 223364 1716.42 558 562 129.8
C 15 214 212764 1634.76 558 562 129.8
C 14 254 5342 36.82 558 562 129.8
D 2 249 247024 1833.57 550 536 134.4
D 12 233 47421 348.77 550 536 134.4
D 13 249 31108 227.42 550 536 134.4

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