ASTROSAT CZTI

Data Quality Report

Orbit 22556

Creation date: 2024-06-27T18:42:46.022059
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/AS1A07_148T05_9000003346_22556cztM0_level2.evt modeM0/AS1A07_148T05_9000003346_22556cztM0_level2_quad_clean.evt
Size (bytes)604,632,960108,843,840
Size576.6 MB 103.8 MB
Events in quadrant A4,245,958677,311
Events in quadrant B4,454,933688,583
Events in quadrant C4,454,354666,563
Events in quadrant D4,559,877653,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184322
B0190372
C0188962
D0197982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8787860.978719%
B87871621.843633%
C87872112.401275%
D87871731.968818%

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 9497 8789 0 0 0.00% 0.00%
B 9497 8789 4 4 0.04% 0.05%
C 9497 8789 0 0 0.00% 0.00%
D 9497 8789 65 65 0.68% 0.74%

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 13 254 15496 64.61 1101 1078 223.2
A 3 137 9702 38.64 1101 1078 223.2
A 0 226 9460 37.56 1101 1078 223.2
B 15 33 40743 186.39 1101 1073 212.8
B 5 172 27095 122.26 1101 1073 212.8
B 12 111 25763 116.0 1101 1073 212.8
C 14 238 164548 653.67 1061 1067 250.1
C 0 207 140732 558.44 1061 1067 250.1
C 10 22 10824 39.01 1061 1067 250.1
D 13 249 126877 476.89 1068 1035 263.9
D 13 172 118330 444.5 1068 1035 263.9
D 13 174 103117 386.85 1068 1035 263.9

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