ASTROSAT CZTI

Data Quality Report

Orbit 33081

Creation date: 2024-06-27T20:44:46.238296
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_007T07_9000004758_33081cztM0_level2.evt modeM0/AS1A11_007T07_9000004758_33081cztM0_level2_quad_clean.evt
Size (bytes)693,780,48077,713,920
Size661.6 MB 74.1 MB
Events in quadrant A2,986,412504,956
Events in quadrant B5,061,730472,474
Events in quadrant C6,195,329464,386
Events in quadrant D6,327,757456,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131673
B0194042
C0228492
D0233682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518120.184106%
B65186459.895674%
C651882112.595888%
D65184046.198220%

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 9263 6520 0 0 0.00% 0.00%
B 9263 6520 440 440 4.75% 6.75%
C 9263 6520 629 629 6.79% 9.65%
D 9263 6520 276 276 2.98% 4.23%

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 13794 84.31 765 748 154.7
A 13 6 11662 70.53 765 748 154.7
A 15 174 8049 47.18 765 748 154.7
B 5 172 1334075 9435.45 731 712 141.3
B 5 200 344547 2433.12 731 712 141.3
B 0 189 167283 1178.73 731 712 141.3
C 8 111 2320889 13985.72 714 721 165.9
C 3 233 500745 3014.09 714 721 165.9
C 0 10 248103 1491.19 714 721 165.9
D 8 195 1021848 5398.95 723 709 189.1
D 7 223 964078 5093.51 723 709 189.1
D 12 218 532099 2809.56 723 709 189.1

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