ASTROSAT CZTI

Data Quality Report

Orbit 06652

Creation date: 2024-06-27T15:09:53.544937
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/AS1A02_103T01_9000000904_06652cztM0_level2.evt modeM0/AS1A02_103T01_9000000904_06652cztM0_level2_quad_clean.evt
Size (bytes)1,422,316,800187,312,320
Size1.3 GB 178.6 MB
Events in quadrant A9,542,1031,124,612
Events in quadrant B8,628,7641,142,204
Events in quadrant C7,925,6291,127,432
Events in quadrant D15,772,1941,046,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396424
B0373073
C0362503
D0586683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178683071.718155%
B178682131.192075%
C178681680.940228%
D17868215812.077457%

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 19868 17872 66 66 0.33% 0.37%
B 19868 17872 18 18 0.09% 0.10%
C 19868 17872 0 0 0.00% 0.00%
D 19868 17872 1595 1595 8.03% 8.92%

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 8 15 1299831 3063.69 2079 2035 423.6
A 15 236 135298 314.59 2079 2035 423.6
A 13 248 47675 107.74 2079 2035 423.6
B 0 214 108406 264.27 2100 2044 402.5
B 4 80 94191 228.95 2100 2044 402.5
B 4 48 84714 205.4 2100 2044 402.5
C 13 61 15807 29.26 2027 2033 470.7
C 8 128 11495 20.1 2027 2033 470.7
C 8 112 6456 9.4 2027 2033 470.7
D 2 33 4750402 9955.74 1937 1878 477.0
D 12 221 2455177 5143.58 1937 1878 477.0
D 8 195 379329 791.36 1937 1878 477.0

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