ASTROSAT CZTI

Data Quality Report

Orbit 42623

Creation date: 2024-06-27T22:42:21.053315
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/AS1A05_174T01_9000005820_42623cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42623cztM0_level2_quad_clean.evt
Size (bytes)333,495,36093,781,440
Size318.0 MB 89.4 MB
Events in quadrant A3,042,565624,104
Events in quadrant B2,577,202636,511
Events in quadrant C2,831,930615,944
Events in quadrant D3,447,344563,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124062
B0115732
C0119562
D0142382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5722190.332052%
B5722110.192240%
C5722200.349528%
D57221242.167074%

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 7245 5723 1 1 0.01% 0.02%
B 7245 5723 0 0 0.00% 0.00%
C 7245 5723 11 11 0.15% 0.19%
D 7245 5723 106 106 1.46% 1.85%

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 578237 4392.79 630 615 131.5
A 2 79 12126 87.54 630 615 131.5
A 13 248 8032 56.41 630 615 131.5
B 7 202 46417 376.52 626 608 121.7
B 0 245 37884 306.38 626 608 121.7
B 12 111 15575 123.02 626 608 121.7
C 15 214 237900 1652.12 617 622 143.6
C 14 254 148615 1030.44 617 622 143.6
C 3 233 33776 230.84 617 622 143.6
D 1 52 356065 2323.42 614 595 153.0
D 2 249 258252 1684.09 614 595 153.0
D 12 6 122962 799.81 614 595 153.0

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