ASTROSAT CZTI

Data Quality Report

Orbit 44245

Creation date: 2024-06-27T23:00:56.419734
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/AS1A13_079T01_9000005978_44245cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44245cztM0_level2_quad_clean.evt
Size (bytes)530,496,000110,738,880
Size505.9 MB 105.6 MB
Events in quadrant A8,254,636639,548
Events in quadrant B3,568,941790,631
Events in quadrant C3,072,804753,008
Events in quadrant D4,196,487681,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296402
B0154212
C0144332
D0176383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7008142420.319635%
B7008741.055936%
C7008110.156963%
D70071271.812473%

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 7738 7009 1110 1110 14.34% 15.84%
B 7738 7009 37 37 0.48% 0.53%
C 7738 7009 3 3 0.04% 0.04%
D 7737 7008 98 98 1.27% 1.40%

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 15 223 3880194 26120.16 717 703 148.5
A 10 83 1477708 9944.5 717 703 148.5
A 10 248 89944 600.85 717 703 148.5
B 0 219 119190 768.13 778 755 154.2
B 4 158 90068 579.25 778 755 154.2
B 0 155 87370 561.75 778 755 154.2
C 14 254 83962 461.45 760 764 180.3
C 3 233 19061 101.48 760 764 180.3
C 13 61 5010 23.55 760 764 180.3
D 4 221 370650 2013.23 746 725 183.7
D 13 249 352370 1913.75 746 725 183.7
D 13 138 128657 696.24 746 725 183.7

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