ASTROSAT CZTI

Data Quality Report

Orbit 09294

Creation date: 2024-06-27T15:44:04.798059
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/AS1G07_077T03_9000001310_09294cztM0_level2.evt modeM0/AS1G07_077T03_9000001310_09294cztM0_level2_quad_clean.evt
Size (bytes)993,781,440183,513,600
Size947.7 MB 175.0 MB
Events in quadrant A8,389,1981,122,994
Events in quadrant B6,800,4281,173,534
Events in quadrant C6,539,0901,168,207
Events in quadrant D7,395,5181,101,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0498
B0505
C0505
D0507

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04866314403
B04167611799
C04074011192
D04485712491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400101
B0406114
C0406106
D0406108

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A142642121.486259%
B14362920.640579%
C14419470.325959%
D143431591.108555%

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 25099 14662 85 85 0.34% 0.58%
B 25096 14820 5 5 0.02% 0.03%
C 25098 14907 1 1 0.00% 0.01%
D 25098 14791 88 88 0.35% 0.59%

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 8 5 1275289 3840.76 1665 1629 331.6
A 4 2 221876 664.16 1665 1629 331.6
A 12 236 165614 494.5 1665 1629 331.6
B 0 214 76515 236.31 1708 1666 316.7
B 12 111 34563 103.86 1708 1666 316.7
B 4 80 29218 86.99 1708 1666 316.7
C 10 22 18520 44.23 1667 1674 380.9
C 13 61 12570 28.61 1667 1674 380.9
C 14 67 10947 24.35 1667 1674 380.9
D 1 52 479095 1201.57 1618 1578 397.4
D 12 233 263772 659.76 1618 1578 397.4
D 7 71 155020 386.11 1618 1578 397.4

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