ASTROSAT CZTI

Data Quality Report

Orbit 34529

Creation date: 2022-02-16T04:19:25.580880
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/AS1A06_005T01_9000004932_34529cztM0_level2.evt modeM0/AS1A06_005T01_9000004932_34529cztM0_level2_quad_clean.evt
Size (bytes)470,712,96075,922,560
Size448.9 MB 72.4 MB
Events in quadrant A2,726,895485,381
Events in quadrant B3,764,800477,510
Events in quadrant C3,002,690472,659
Events in quadrant D4,358,906449,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121683
B0150952
C0125322
D0171522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593090.151771%
B59302744.620573%
C5930240.404722%
D59301712.883642%

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 7213 5931 3 3 0.04% 0.05%
B 7213 5931 172 172 2.38% 2.90%
C 7213 5931 19 19 0.26% 0.32%
D 7213 5931 141 141 1.95% 2.38%

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 9 143 40075 286.68 682 668 137.5
A 10 83 39676 283.78 682 668 137.5
A 13 6 10237 69.61 682 668 137.5
B 5 172 901384 6901.64 670 654 130.5
B 0 190 62063 470.53 670 654 130.5
B 4 232 42498 320.62 670 654 130.5
C 15 214 267359 1729.31 663 669 154.2
C 0 10 89679 577.17 663 669 154.2
C 14 67 49454 316.34 663 669 154.2
D 8 195 1072686 6704.26 652 632 159.9
D 7 80 504964 3153.92 652 632 159.9
D 12 17 88811 551.44 652 632 159.9

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