ASTROSAT CZTI

Data Quality Report

Orbit 36006

Creation date: 2022-08-09T18:33:04.312338
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/AS1T04_069T01_9000005158_36006cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36006cztM0_level2_quad_clean.evt
Size (bytes)521,544,96079,951,680
Size497.4 MB 76.2 MB
Events in quadrant A2,865,086526,919
Events in quadrant B4,765,964488,300
Events in quadrant C3,537,695503,658
Events in quadrant D4,222,773486,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122823
B0180722
C0141192
D0163582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594690.151362%
B59465699.569458%
C59461522.556340%
D59462373.985873%

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 7258 5947 0 0 0.00% 0.00%
B 7258 5947 425 425 5.86% 7.15%
C 7258 5947 121 121 1.67% 2.03%
D 7258 5947 260 260 3.58% 4.37%

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 180393 1272.79 691 677 141.2
A 13 254 9195 60.33 691 677 141.2
A 3 137 7191 46.13 691 677 141.2
B 5 172 1688192 13187.27 658 640 128.0
B 0 190 264197 2059.55 658 640 128.0
B 0 213 77210 598.35 658 640 128.0
C 9 187 591117 3802.45 658 661 155.3
C 15 214 248471 1595.86 658 661 155.3
C 0 10 99486 636.42 658 661 155.3
D 12 227 475847 2934.24 662 643 162.0
D 12 6 369298 2276.33 662 643 162.0
D 12 235 331398 2042.31 662 643 162.0

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