ASTROSAT CZTI

Data Quality Report

Orbit 21149

Creation date: 2024-06-27T18:24:10.092013
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/AS1T03_136T01_9000003124_21149cztM0_level2.evt modeM0/AS1T03_136T01_9000003124_21149cztM0_level2_quad_clean.evt
Size (bytes)425,822,40074,528,640
Size406.1 MB 71.1 MB
Events in quadrant A2,705,608473,635
Events in quadrant B2,855,094488,593
Events in quadrant C2,785,577466,322
Events in quadrant D4,166,331433,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128471250
B0132381350
C0129921282
D0181981934

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012715
B012612
C012715
D012713

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165
B0163
C0166
D0164

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5653150.265346%
B5645300.531444%
C5651560.990975%
D56241352.400427%

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 7449 5789 0 0 0.00% 0.00%
B 7449 5760 2 2 0.03% 0.03%
C 7449 5780 13 13 0.17% 0.22%
D 7449 5742 91 91 1.22% 1.58%

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 15 192 10425 69.0 697 685 141.2
A 13 254 7300 46.86 697 685 141.2
A 8 205 6683 42.49 697 685 141.2
B 0 230 34255 252.97 704 688 132.7
B 12 111 15539 111.92 704 688 132.7
B 4 216 14544 104.42 704 688 132.7
C 14 238 107120 675.99 672 677 157.5
C 0 10 57736 362.37 672 677 157.5
C 13 61 4953 27.16 672 677 157.5
D 1 239 519894 3235.34 662 643 160.5
D 5 222 388569 2417.08 662 643 160.5
D 1 52 329947 2051.82 662 643 160.5

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