ASTROSAT CZTI

Data Quality Report

Orbit 34847

Creation date: 2024-06-27T21:06:05.565025
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/AS1C07_005T01_9000004992_34847cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34847cztM0_level2_quad_clean.evt
Size (bytes)777,882,24091,440,000
Size741.8 MB 87.2 MB
Events in quadrant A7,744,918511,119
Events in quadrant B7,998,265548,515
Events in quadrant C3,301,255659,782
Events in quadrant D4,106,688626,600

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272143
B0277092
C0133212
D0164462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6027191531.773685%
B6027213135.357558%
C6027490.813008%
D60271061.758752%

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 7340 6028 1522 1522 20.74% 25.25%
B 7340 6028 1957 1957 26.66% 32.47%
C 7340 6028 31 31 0.42% 0.51%
D 7339 6027 103 103 1.40% 1.71%

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 15 169 5413078 47421.87 563 549 114.1
A 15 237 58568 508.33 563 549 114.1
A 10 83 41724 360.75 563 549 114.1
B 5 14 1583584 13983.16 592 576 113.2
B 5 31 1571902 13879.97 592 576 113.2
B 5 15 1568651 13851.25 592 576 113.2
C 15 214 278808 1794.05 669 674 155.0
C 8 111 182127 1170.42 669 674 155.0
C 0 10 128491 824.46 669 674 155.0
D 8 195 663143 4044.06 672 653 163.8
D 2 249 110191 668.66 672 653 163.8
D 12 233 90475 548.3 672 653 163.8

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