ASTROSAT CZTI

Data Quality Report

Orbit 11245

Creation date: 2024-06-27T16:10:14.757416
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/AS1T01_202T01_9000001640_11245cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11245cztM0_level2_quad_clean.evt
Size (bytes)486,034,560119,335,680
Size463.5 MB 113.8 MB
Events in quadrant A3,641,219804,839
Events in quadrant B3,798,275809,594
Events in quadrant C2,890,000839,569
Events in quadrant D4,000,089758,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145752
B0149311
C0122281
D0156831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57491272.209080%
B57492354.087667%
C5749220.382675%
D57491232.139503%

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 7024 5750 75 75 1.07% 1.30%
B 7024 5750 129 129 1.84% 2.24%
C 7024 5750 1 1 0.01% 0.02%
D 7024 5750 78 78 1.11% 1.36%

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 496820 3001.81 731 716 165.3
A 14 238 171607 1034.02 731 716 165.3
A 15 174 67058 401.42 731 716 165.3
B 4 239 642436 4411.51 737 726 145.5
B 10 114 145654 996.32 737 726 145.5
B 11 51 37785 254.77 737 726 145.5
C 5 128 7455 38.19 738 750 175.5
C 4 254 6465 32.55 738 750 175.5
C 13 61 5347 26.18 738 750 175.5
D 8 195 564674 3079.85 713 693 183.1
D 12 157 228921 1246.33 713 693 183.1
D 10 253 146326 795.29 713 693 183.1

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