ASTROSAT CZTI

Data Quality Report

Orbit 35735

Creation date: 2022-05-09T16:52:55.563231
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_029T06_9000005126_35735cztM0_level2.evt modeM0/AS1A09_029T06_9000005126_35735cztM0_level2_quad_clean.evt
Size (bytes)459,028,80090,797,760
Size437.8 MB 86.6 MB
Events in quadrant A4,826,973571,755
Events in quadrant B2,921,301614,721
Events in quadrant C2,922,655601,422
Events in quadrant D2,861,628581,266

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180163
B0122552
C0120262
D0120252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543576914.149034%
B5435891.637534%
C5435751.379945%
D5435170.312787%

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 7138 5435 663 663 9.29% 12.20%
B 7138 5436 62 62 0.87% 1.14%
C 7138 5436 59 59 0.83% 1.09%
D 7138 5436 13 13 0.18% 0.24%

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 2306724 18749.54 609 597 123.0
A 10 83 142211 1151.37 609 597 123.0
A 13 6 15080 117.75 609 597 123.0
B 5 172 383141 3142.49 630 613 121.7
B 5 255 35868 289.62 630 613 121.7
B 12 111 14919 117.52 630 613 121.7
C 15 214 230006 1603.63 615 621 143.0
C 0 10 206653 1440.37 615 621 143.0
C 15 208 49772 343.61 615 621 143.0
D 1 52 118595 770.96 624 607 153.0
D 13 249 99926 648.97 624 607 153.0
D 14 52 71702 464.55 624 607 153.0

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