ASTROSAT CZTI

Data Quality Report

Orbit 25849

Creation date: 2024-06-27T19:22:03.546334
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_068T01_9000003756_25849cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25849cztM0_level2_quad_clean.evt
Size (bytes)700,490,880103,821,120
Size668.0 MB 99.0 MB
Events in quadrant A3,530,390737,936
Events in quadrant B3,145,308740,457
Events in quadrant C10,175,994533,274
Events in quadrant D3,939,572694,847

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145650
B0133200
C0346240
D0158650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521181.887396%
B6253651.039501%
C6253268943.003358%
D62531913.054534%

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 7357 6253 33 33 0.45% 0.53%
B 7358 6254 0 0 0.00% 0.00%
C 7358 6254 2214 2214 30.09% 35.40%
D 7358 6254 132 132 1.79% 2.11%

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 0 13 291749 1795.11 813 798 162.1
A 6 16 96099 587.99 813 798 162.1
A 13 254 9111 51.29 813 798 162.1
B 6 36 27317 173.9 797 776 152.6
B 12 111 18229 114.35 797 776 152.6
B 11 111 16727 104.51 797 776 152.6
C 7 87 7560975 51437.25 634 640 147.0
C 14 238 100788 681.36 634 640 147.0
C 7 226 17421 114.17 634 640 147.0
D 1 52 434668 2335.38 781 763 185.8
D 12 233 423491 2275.22 781 763 185.8
D 7 80 85216 454.55 781 763 185.8

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