ASTROSAT CZTI

Data Quality Report

Orbit 35942

Creation date: 2022-06-09T03:50:44.301759
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_080T01_9000005146_35942cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35942cztM0_level2_quad_clean.evt
Size (bytes)444,804,48075,942,720
Size424.2 MB 72.4 MB
Events in quadrant A3,018,511500,480
Events in quadrant B3,516,511496,348
Events in quadrant C2,991,137478,999
Events in quadrant D3,590,768458,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120333
B0136132
C0118042
D0140692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217220.421698%
B52172134.082806%
C5217721.380104%
D52171252.396013%

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 7279 5218 7 7 0.10% 0.13%
B 7279 5218 125 125 1.72% 2.40%
C 7279 5218 54 54 0.74% 1.03%
D 7279 5218 98 98 1.35% 1.88%

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 166431 1207.17 683 673 137.3
A 10 83 164695 1194.53 683 673 137.3
A 9 143 37080 265.14 683 673 137.3
B 5 172 479733 3828.75 662 650 125.1
B 4 171 261714 2086.38 662 650 125.1
B 0 213 59071 466.89 662 650 125.1
C 0 10 227824 1535.82 640 647 147.9
C 15 214 219372 1478.68 640 647 147.9
C 0 207 40318 268.19 640 647 147.9
D 8 195 397172 2484.19 649 631 159.6
D 13 249 183065 1142.89 649 631 159.6
D 1 52 177544 1108.3 649 631 159.6

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