ASTROSAT CZTI

Data Quality Report

Orbit 36845

Creation date: 2024-06-27T21:32:17.830909
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_075T01_9000005244_36845cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36845cztM0_level2_quad_clean.evt
Size (bytes)1,921,559,040217,612,800
Size1.8 GB 207.5 MB
Events in quadrant A9,217,0851,454,785
Events in quadrant B25,933,322919,620
Events in quadrant C9,811,8671,484,450
Events in quadrant D11,928,1861,400,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0398566
B0896425
C0411725
D0492275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19296340.176202%
B192521214463.079161%
C192961510.782546%
D192965662.933250%

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 26107 19300 13 13 0.05% 0.07%
B 26106 19252 6466 6466 24.77% 33.59%
C 26107 19300 123 123 0.47% 0.64%
D 26107 19300 497 497 1.90% 2.58%

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 697437 1601.45 2160 2112 434.2
A 15 223 81721 183.35 2160 2112 434.2
A 9 143 48793 107.51 2160 2112 434.2
B 12 1 17577846 70844.2 1321 1288 248.1
B 5 172 837164 3369.09 1321 1288 248.1
B 12 243 694021 2792.13 1321 1288 248.1
C 15 214 837137 1732.25 2096 2104 482.1
C 0 10 553642 1144.15 2096 2104 482.1
C 14 254 135245 276.2 2096 2104 482.1
D 1 52 576651 1141.44 2082 2025 503.4
D 13 171 549258 1087.03 2082 2025 503.4
D 2 250 475779 941.07 2082 2025 503.4

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