ASTROSAT CZTI

Data Quality Report

Orbit 38234

Creation date: 2024-06-27T21:50:05.746037
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_38234cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38234cztM0_level2_quad_clean.evt
Size (bytes)372,562,56093,798,720
Size355.3 MB 89.5 MB
Events in quadrant A2,906,314623,652
Events in quadrant B2,501,355647,985
Events in quadrant C2,653,399617,539
Events in quadrant D5,297,346562,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119633
B0112442
C0113032
D0198222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5564200.359454%
B556450.089863%
C5564120.215672%
D55641502.695902%

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 7117 5565 12 12 0.17% 0.22%
B 7117 5565 0 0 0.00% 0.00%
C 7117 5565 8 8 0.11% 0.14%
D 7117 5565 133 133 1.87% 2.39%

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 390072 3072.08 620 606 126.8
A 12 189 66608 520.62 620 606 126.8
A 9 143 14521 109.76 620 606 126.8
B 5 172 32097 261.42 619 601 120.5
B 12 111 14914 118.8 619 601 120.5
B 11 111 13963 110.91 619 601 120.5
C 15 214 231724 1629.65 607 610 141.8
C 15 159 28689 197.99 607 610 141.8
C 5 250 8723 57.21 607 610 141.8
D 10 203 2093469 14279.91 597 579 146.6
D 12 235 338797 2307.68 597 579 146.6
D 7 223 284816 1939.37 597 579 146.6

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