ASTROSAT CZTI

Data Quality Report

Orbit 35216

Creation date: 2022-04-03T13:31:45.987536
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/AS1C07_004T01_9000005052_35216cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35216cztM0_level2_quad_clean.evt
Size (bytes)658,975,68065,715,840
Size628.4 MB 62.7 MB
Events in quadrant A2,685,435427,163
Events in quadrant B8,112,416361,282
Events in quadrant C3,081,905434,591
Events in quadrant D5,720,701396,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111823
B0277482
C0123872
D0207302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5286130.245933%
B5286234244.305713%
C5286741.399924%
D52863216.072645%

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 8843 5288 2 2 0.02% 0.04%
B 8842 5287 1654 1654 18.71% 31.28%
C 8843 5288 51 51 0.58% 0.96%
D 8843 5288 411 411 4.65% 7.77%

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 101083 765.13 659 648 131.3
A 7 191 13436 97.42 659 648 131.3
A 13 6 12659 91.5 659 648 131.3
B 5 236 5837446 58585.08 522 511 99.6
B 4 232 139971 1399.75 522 511 99.6
B 5 172 53865 535.51 522 511 99.6
C 15 214 224644 1521.88 639 643 147.2
C 0 10 216117 1463.95 639 643 147.2
C 3 233 67590 454.84 639 643 147.2
D 8 195 2284060 15066.01 627 610 151.6
D 13 249 299982 1975.23 627 610 151.6
D 7 80 287291 1891.5 627 610 151.6

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