ASTROSAT CZTI

Data Quality Report

Orbit 34131

Creation date: 2024-06-27T20:56:49.644282
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/AS1A11_097T08_9000004874_34131cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34131cztM0_level2_quad_clean.evt
Size (bytes)432,745,92083,410,560
Size412.7 MB 79.5 MB
Events in quadrant A2,458,126549,335
Events in quadrant B3,007,842567,027
Events in quadrant C3,099,869540,976
Events in quadrant D4,186,947504,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105722
B0121781
C0123531
D0161181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519980.153876%
B5199941.808040%
C5199861.654164%
D51991613.096749%

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 7142 5200 0 0 0.00% 0.00%
B 7142 5200 70 70 0.98% 1.35%
C 7142 5200 57 57 0.80% 1.10%
D 7142 5200 156 156 2.18% 3.00%

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 10 83 19823 152.54 628 617 125.9
A 13 6 11209 84.13 628 617 125.9
A 13 254 8768 64.74 628 617 125.9
B 5 172 152264 1273.23 630 616 119.1
B 5 31 129228 1079.82 630 616 119.1
B 0 219 83260 693.87 630 616 119.1
C 0 10 444642 3156.04 608 613 140.7
C 15 214 225460 1598.15 608 613 140.7
C 4 112 31914 222.48 608 613 140.7
D 8 195 578966 3934.12 600 582 147.0
D 12 227 437237 2970.09 600 582 147.0
D 14 52 298440 2026.0 600 582 147.0

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