ASTROSAT CZTI

Data Quality Report

Orbit 26849

Creation date: 2024-06-27T19:33:38.031036
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/AS1T03_224T01_9000003868_26849cztM0_level2.evt modeM0/AS1T03_224T01_9000003868_26849cztM0_level2_quad_clean.evt
Size (bytes)1,911,104,640277,485,120
Size1.8 GB 264.6 MB
Events in quadrant A13,468,5771,760,083
Events in quadrant B14,097,3611,778,392
Events in quadrant C11,042,8501,754,361
Events in quadrant D17,771,4361,580,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544730
B0556330
C0465390
D0679430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222362271.020867%
B2223610044.515201%
C222362261.016370%
D2223619028.553697%

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 26641 22240 73 73 0.27% 0.33%
B 26641 22239 807 807 3.03% 3.63%
C 26641 22240 8 8 0.03% 0.04%
D 26641 22239 1607 1607 6.03% 7.23%

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 2791957 5078.03 2765 2714 549.3
A 13 254 36608 61.71 2765 2714 549.3
A 3 137 25222 40.98 2765 2714 549.3
B 0 189 2673688 5231.53 2749 2684 510.6
B 7 205 366730 713.03 2749 2684 510.6
B 15 33 199391 385.28 2749 2684 510.6
C 14 238 433332 691.52 2681 2700 622.7
C 15 208 141443 222.8 2681 2700 622.7
C 13 61 18359 25.14 2681 2700 622.7
D 1 52 4721350 7771.98 2566 2513 607.2
D 7 80 2735438 4501.16 2566 2513 607.2
D 2 250 470943 771.51 2566 2513 607.2

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