ASTROSAT CZTI

Data Quality Report

Orbit 12894

Creation date: 2024-06-27T16:33:38.846251
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/AS1A04_116T01_9000001896_12894cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12894cztM0_level2_quad_clean.evt
Size (bytes)329,644,80074,534,400
Size314.4 MB 71.1 MB
Events in quadrant A2,279,241499,293
Events in quadrant B3,117,611465,559
Events in quadrant C2,100,182499,737
Events in quadrant D2,182,198478,865

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096142
B0121701
C094361
D096791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4461571.277740%
B446148010.759919%
C4461491.098408%
D4461611.367406%

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 5666 4462 0 0 0.00% 0.00%
B 5666 4462 205 205 3.62% 4.59%
C 5666 4462 0 0 0.00% 0.00%
D 5666 4462 13 13 0.23% 0.29%

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 1 162 46099 401.52 560 548 113.4
A 1 178 24240 208.84 560 548 113.4
A 1 161 20666 177.34 560 548 113.4
B 4 239 907993 9333.7 523 510 97.2
B 3 64 68612 700.45 523 510 97.2
B 3 209 29879 302.07 523 510 97.2
C 13 61 4002 27.85 537 539 124.3
C 4 112 2467 15.51 537 539 124.3
C 3 202 1334 6.39 537 539 124.3
D 1 52 83123 642.98 537 519 128.5
D 2 136 45039 346.54 537 519 128.5
D 2 234 17567 132.7 537 519 128.5

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