ASTROSAT CZTI

Data Quality Report

Orbit 35141

Creation date: 2022-03-29T14:00:29.710433
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_037T01_9000005030_35141cztM0_level2.evt modeM0/AS1A11_037T01_9000005030_35141cztM0_level2_quad_clean.evt
Size (bytes)501,960,96097,770,240
Size478.7 MB 93.2 MB
Events in quadrant A3,393,743656,604
Events in quadrant B3,182,303671,119
Events in quadrant C2,910,805662,316
Events in quadrant D5,358,607602,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134382
B0128451
C0117791
D0196871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52603196.064639%
B52601723.269962%
C5260330.627376%
D52603646.920152%

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 6903 5261 153 153 2.22% 2.91%
B 6903 5261 92 92 1.33% 1.75%
C 6903 5261 21 21 0.30% 0.40%
D 6903 5261 221 221 3.20% 4.20%

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 15 169 856525 7071.51 605 594 121.0
A 15 174 127432 1047.91 605 594 121.0
A 10 83 61997 507.3 605 594 121.0
B 5 172 306978 2645.39 602 586 115.8
B 5 236 306087 2637.7 602 586 115.8
B 3 112 102060 876.13 602 586 115.8
C 15 214 219987 1597.63 594 599 137.3
C 0 10 207098 1503.77 594 599 137.3
C 14 67 70604 509.79 594 599 137.3
D 8 195 1624000 11418.68 580 565 142.2
D 12 79 366228 2571.95 580 565 142.2
D 5 223 362124 2543.08 580 565 142.2

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