ASTROSAT CZTI

Data Quality Report

Orbit 38182

Creation date: 2024-06-27T21:49:27.151187
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_145T01_9000005370_38182cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38182cztM0_level2_quad_clean.evt
Size (bytes)325,474,56097,968,960
Size310.4 MB 93.4 MB
Events in quadrant A3,034,027660,730
Events in quadrant B2,661,764673,950
Events in quadrant C2,862,056640,588
Events in quadrant D3,044,911591,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124863
B0117512
C0119362
D0128372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5712130.227591%
B5712160.280112%
C5712270.472689%
D5712911.593137%

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 7385 5713 6 6 0.08% 0.11%
B 7384 5711 5 5 0.07% 0.09%
C 7384 5712 23 23 0.31% 0.40%
D 7384 5712 79 79 1.07% 1.38%

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 400045 3032.95 644 629 131.7
A 12 189 101866 768.74 644 629 131.7
A 9 143 23123 170.8 644 629 131.7
B 0 229 48383 387.23 643 626 123.3
B 0 230 24543 193.93 643 626 123.3
B 5 172 21638 170.37 643 626 123.3
C 15 214 237928 1603.09 632 636 148.0
C 14 254 55324 369.46 632 636 148.0
C 2 16 44286 294.89 632 636 148.0
D 7 55 160078 1046.69 630 612 152.4
D 12 227 60964 396.13 630 612 152.4
D 13 138 57199 371.42 630 612 152.4

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