ASTROSAT CZTI

Data Quality Report

Orbit 04865

Creation date: 2024-06-27T14:48:12.589688
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/AS1G05_009T02_9000000618_04865cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04865cztM0_level2_quad_clean.evt
Size (bytes)542,335,68076,956,480
Size517.2 MB 73.4 MB
Events in quadrant A3,217,820482,760
Events in quadrant B3,280,890484,730
Events in quadrant C2,906,431475,841
Events in quadrant D6,579,640434,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140013
B0140982
C0132082
D0240022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475610.942085%
B6475610.942085%
C6475110.169884%
D6475114017.606178%

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 7535 6476 35 35 0.46% 0.54%
B 7535 6476 11 11 0.15% 0.17%
C 7535 6476 0 0 0.00% 0.00%
D 7535 6476 1132 1132 15.02% 17.48%

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 50 201414 1313.17 750 734 152.8
A 13 251 63908 413.38 750 734 152.8
A 8 15 27437 174.73 750 734 152.8
B 4 80 86811 582.44 763 744 147.8
B 7 252 65098 435.5 763 744 147.8
B 10 16 60148 402.0 763 744 147.8
C 8 128 15726 87.95 731 737 170.4
C 1 16 9161 49.43 731 737 170.4
C 8 112 7666 40.66 731 737 170.4
D 10 15 2542246 16003.91 644 624 158.8
D 13 53 559115 3516.67 644 624 158.8
D 2 136 285774 1795.51 644 624 158.8

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