ASTROSAT CZTI

Data Quality Report

Orbit 50520

Creation date: 2025-01-30T06:01:47.069017
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/AS1T05_239T01_9000006444_50520cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50520cztM0_level2_quad_clean.evt
Size (bytes)539,956,80094,728,960
Size514.9 MB 90.3 MB
Events in quadrant A5,038,665601,874
Events in quadrant B3,719,145690,120
Events in quadrant C5,059,474597,653
Events in quadrant D5,655,136516,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194012
B0156222
C0195722
D0215442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66354817.249435%
B66351802.712886%
C66353615.440844%
D663584212.690279%

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 7760 6636 389 389 5.01% 5.86%
B 7760 6636 119 119 1.53% 1.79%
C 7760 6635 252 252 3.25% 3.80%
D 7760 6636 763 763 9.83% 11.50%

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 4 249 684173 3971.71 700 683 172.1
A 12 250 517562 3003.55 700 683 172.1
A 4 3 194561 1126.61 700 683 172.1
B 7 0 299510 1969.86 713 688 151.7
B 12 18 186684 1226.1 713 688 151.7
B 10 246 53761 349.86 713 688 151.7
C 15 235 597376 3125.91 694 688 190.9
C 15 196 260806 1362.7 694 688 190.9
C 15 214 218011 1138.5 694 688 190.9
D 0 19 964806 5251.65 656 633 183.6
D 15 184 882364 4802.61 656 633 183.6
D 6 42 453388 2466.06 656 633 183.6

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