ASTROSAT CZTI

Data Quality Report

Orbit 37808

Creation date: 2024-06-27T21:44:42.866434
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/AS1A10_103T06_9000005348_37808cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37808cztM0_level2_quad_clean.evt
Size (bytes)433,359,36063,815,040
Size413.3 MB 60.9 MB
Events in quadrant A2,947,754391,195
Events in quadrant B4,212,688390,560
Events in quadrant C2,827,745400,998
Events in quadrant D2,781,233383,105

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118623
B0160592
C0114392
D0115222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5223180.344630%
B52231893.618610%
C5223200.382922%
D5223270.516944%

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 7106 5224 8 8 0.11% 0.15%
B 7106 5224 139 139 1.96% 2.66%
C 7106 5224 12 12 0.17% 0.23%
D 7106 5224 23 23 0.32% 0.44%

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 324860 2495.43 648 638 129.9
A 15 222 57286 436.0 648 638 129.9
A 13 248 29342 220.93 648 638 129.9
B 10 246 1409635 11573.61 641 626 121.7
B 0 189 99102 808.88 641 626 121.7
B 5 172 56244 456.85 641 626 121.7
C 15 214 241312 1662.71 627 632 144.8
C 0 10 72754 498.25 627 632 144.8
C 0 207 41034 279.11 627 632 144.8
D 10 199 143867 929.29 630 615 154.2
D 5 70 78879 507.7 630 615 154.2
D 2 249 35676 227.44 630 615 154.2

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