ASTROSAT CZTI

Data Quality Report

Orbit 28786

Creation date: 2024-06-27T19:56:18.103833
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/AS1C05_019T04_9000004130_28786cztM0_level2.evt modeM0/AS1C05_019T04_9000004130_28786cztM0_level2_quad_clean.evt
Size (bytes)790,162,56095,955,840
Size753.6 MB 91.5 MB
Events in quadrant A2,900,431676,822
Events in quadrant B2,990,582688,447
Events in quadrant C4,422,991649,729
Events in quadrant D13,188,350447,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128811
B0130821
C0174411
D0434971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6326170.268732%
B6327400.632211%
C63271892.987198%
D6327420666.477003%

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 7211 6327 1 1 0.01% 0.02%
B 7212 6327 10 10 0.14% 0.16%
C 7212 6328 17 17 0.24% 0.27%
D 7212 6327 4288 4288 59.46% 67.77%

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 13 254 11151 68.48 749 731 152.2
A 7 16 8207 49.13 749 731 152.2
A 3 137 7497 44.47 749 731 152.2
B 0 229 36396 250.09 746 727 142.6
B 12 111 17939 120.68 746 727 142.6
B 5 255 16229 108.69 746 727 142.6
C 3 233 1473466 8791.53 717 719 167.5
C 14 238 120018 712.15 717 719 167.5
C 15 208 22786 131.73 717 719 167.5
D 1 52 4994433 39661.62 529 515 125.9
D 8 195 4853207 38540.0 529 515 125.9
D 13 104 1293093 10265.63 529 515 125.9

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