ASTROSAT CZTI

Data Quality Report

Orbit 12520

Creation date: 2024-06-27T16:28:33.224089
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/AS1T01_218T01_9000001852_12520cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12520cztM0_level2_quad_clean.evt
Size (bytes)451,635,84096,788,160
Size430.7 MB 92.3 MB
Events in quadrant A3,219,163627,182
Events in quadrant B3,402,951652,993
Events in quadrant C2,947,258638,354
Events in quadrant D3,697,964590,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134132
B0140622
C0127822
D0149072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6040300.496689%
B60401232.036424%
C6040240.397351%
D6040841.390728%

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 8641 6043 0 0 0.00% 0.00%
B 8641 6043 34 34 0.39% 0.56%
C 8641 6043 0 0 0.00% 0.00%
D 8641 6043 35 35 0.41% 0.58%

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 12 189 122055 787.52 766 751 154.0
A 1 162 56787 363.79 766 751 154.0
A 1 178 31442 199.25 766 751 154.0
B 4 239 320405 2205.61 776 760 144.9
B 0 214 33756 227.68 776 760 144.9
B 12 111 15856 104.17 776 760 144.9
C 13 61 5507 27.21 755 760 174.4
C 14 234 2745 11.38 755 760 174.4
C 12 4 2555 10.29 755 760 174.4
D 1 52 748784 4248.82 735 714 176.1
D 2 14 47116 263.55 735 714 176.1
D 8 195 30320 168.15 735 714 176.1

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