ASTROSAT CZTI

Data Quality Report

Orbit 36042

Creation date: 2022-08-09T23:57:07.599800
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/AS1T04_069T01_9000005158_36042cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36042cztM0_level2_quad_clean.evt
Size (bytes)444,908,16057,787,200
Size424.3 MB 55.1 MB
Events in quadrant A2,592,908361,091
Events in quadrant B2,996,144364,967
Events in quadrant C4,180,581332,403
Events in quadrant D3,352,676327,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108503
B0121522
C0157892
D0134762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517280.154679%
B5172901.740139%
C51724408.507347%
D51722605.027069%

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 7115 5173 0 0 0.00% 0.00%
B 7115 5173 64 64 0.90% 1.24%
C 7115 5173 324 324 4.55% 6.26%
D 7115 5173 254 254 3.57% 4.91%

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 160155 1279.2 616 604 124.7
A 0 31 43218 341.66 616 604 124.7
A 13 254 7496 55.26 616 604 124.7
B 5 236 209948 1789.2 615 599 117.0
B 0 213 121279 1031.39 615 599 117.0
B 0 190 114087 969.92 615 599 117.0
C 9 187 1468858 10833.73 580 584 135.5
C 15 214 209085 1538.43 580 584 135.5
C 0 10 160344 1178.79 580 584 135.5
D 12 6 489848 3417.07 582 566 143.2
D 1 52 369488 2576.5 582 566 143.2
D 13 249 58899 407.39 582 566 143.2

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