ASTROSAT CZTI

Data Quality Report

Orbit 35713

Creation date: 2022-05-09T15:35:03.501115
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/AS1A09_142T05_9000005118_35713cztM0_level2.evt modeM0/AS1A09_142T05_9000005118_35713cztM0_level2_quad_clean.evt
Size (bytes)425,980,80060,523,200
Size406.2 MB 57.7 MB
Events in quadrant A2,408,330378,979
Events in quadrant B2,957,439377,155
Events in quadrant C3,832,946364,558
Events in quadrant D3,355,585354,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104793
B0120522
C0145602
D0134392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A509050.098232%
B50901332.612967%
C50904388.605108%
D50902234.381139%

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 9275 5092 0 0 0.00% 0.00%
B 9275 5092 116 116 1.25% 2.28%
C 9275 5092 409 409 4.41% 8.03%
D 9275 5092 232 232 2.50% 4.56%

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 136732 1155.66 584 572 117.8
A 13 6 9553 76.23 584 572 117.8
A 3 137 6071 46.67 584 572 117.8
B 5 172 538524 4827.67 575 559 111.4
B 5 255 143762 1285.1 575 559 111.4
B 12 111 13739 118.28 575 559 111.4
C 0 10 1302990 9955.61 555 558 130.8
C 15 214 209626 1598.09 555 558 130.8
C 0 207 142371 1084.0 555 558 130.8
D 13 249 451112 3305.79 555 538 136.3
D 2 250 340617 2495.11 555 538 136.3
D 12 6 280356 2052.98 555 538 136.3

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