ASTROSAT CZTI

Data Quality Report

Orbit 35423

Creation date: 2022-04-20T20:37:32.750391
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_097T07_9000005072_35423cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35423cztM0_level2_quad_clean.evt
Size (bytes)541,054,08048,355,200
Size516.0 MB 46.1 MB
Events in quadrant A2,477,772301,098
Events in quadrant B7,392,987245,732
Events in quadrant C2,898,713293,932
Events in quadrant D3,281,345275,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102103
B0254592
C0113232
D0128922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494390.182076%
B4943155831.519320%
C49431382.791827%
D49431012.043294%

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 7035 4944 0 0 0.00% 0.00%
B 7035 4944 1175 1175 16.70% 23.77%
C 7035 4943 104 104 1.48% 2.10%
D 7035 4943 96 96 1.36% 1.94%

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 123885 1011.25 606 596 121.9
A 13 6 12754 99.72 606 596 121.9
A 13 254 7320 55.15 606 596 121.9
B 4 251 3099693 30083.87 541 529 103.0
B 5 236 510722 4952.49 541 529 103.0
B 5 31 362346 3512.19 541 529 103.0
C 0 10 374832 2782.53 576 580 134.5
C 15 214 204506 1516.17 576 580 134.5
C 15 208 42575 312.23 576 580 134.5
D 13 249 192430 1352.92 578 563 141.8
D 7 80 176836 1242.96 578 563 141.8
D 12 217 161739 1136.51 578 563 141.8

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