ASTROSAT CZTI

Data Quality Report

Orbit 20486

Creation date: 2024-06-27T18:15:57.412359
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/AS1A05_208T03_9000003026_20486cztM0_level2.evt modeM0/AS1A05_208T03_9000003026_20486cztM0_level2_quad_clean.evt
Size (bytes)750,432,96079,655,040
Size715.7 MB 76.0 MB
Events in quadrant A3,510,291496,828
Events in quadrant B3,680,970503,123
Events in quadrant C3,579,036482,188
Events in quadrant D11,461,143418,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153891
B0155881
C0152121
D0392001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73441622.205882%
B73451672.273656%
C73451642.232811%
D7345123916.868618%

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 7509 7344 16 16 0.21% 0.22%
B 7510 7345 2 2 0.03% 0.03%
C 7510 7345 1 1 0.01% 0.01%
D 7510 7345 1023 1023 13.62% 13.93%

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 5 16 109182 614.69 869 849 176.2
A 12 16 31057 171.4 869 849 176.2
A 9 143 17586 94.97 869 849 176.2
B 0 189 83120 493.0 872 850 166.9
B 0 197 55109 325.14 872 850 166.9
B 0 190 53644 316.36 872 850 166.9
C 3 233 140035 709.42 839 842 196.2
C 14 238 130215 659.37 839 842 196.2
C 0 207 31445 155.97 839 842 196.2
D 1 52 6741685 34498.22 799 776 195.4
D 2 165 757843 3874.47 799 776 195.4
D 5 222 611691 3126.5 799 776 195.4

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