ASTROSAT CZTI

Data Quality Report

Orbit 35523

Creation date: 2022-04-24T07:33:39.528509
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_097T09_9000005086_35523cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35523cztM0_level2_quad_clean.evt
Size (bytes)381,890,88061,464,960
Size364.2 MB 58.6 MB
Events in quadrant A2,505,385386,688
Events in quadrant B2,651,713397,613
Events in quadrant C3,361,712373,341
Events in quadrant D2,713,840360,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103583
B0107802
C0130182
D0111502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489360.122624%
B4893721.471490%
C48932154.394032%
D4893601.226242%

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 7046 4894 2 2 0.03% 0.04%
B 7046 4894 34 34 0.48% 0.69%
C 7046 4894 188 188 2.67% 3.84%
D 7046 4894 40 40 0.57% 0.82%

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 127757 1057.63 601 592 120.2
A 9 143 32906 268.76 601 592 120.2
A 15 169 13190 104.78 601 592 120.2
B 5 236 174246 1513.06 600 586 114.8
B 5 172 80075 692.57 600 586 114.8
B 5 200 21754 184.43 600 586 114.8
C 0 10 506127 3763.47 576 581 134.3
C 0 207 243998 1812.08 576 581 134.3
C 15 214 202955 1506.55 576 581 134.3
D 13 249 332681 2371.02 572 557 140.1
D 8 195 132223 939.96 572 557 140.1
D 10 203 37728 265.36 572 557 140.1

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