ASTROSAT CZTI

Data Quality Report

Orbit 07998

Creation date: 2024-06-27T15:26:37.791870
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/AS1G06_138T03_9000001096_07998cztM0_level2.evt modeM0/AS1G06_138T03_9000001096_07998cztM0_level2_quad_clean.evt
Size (bytes)1,270,555,200203,768,640
Size1.2 GB 194.3 MB
Events in quadrant A8,311,1851,231,354
Events in quadrant B8,664,0331,252,364
Events in quadrant C8,544,8881,242,726
Events in quadrant D11,726,9061,189,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03711210
B03761915
C03716522
D04723511

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182202291.256861%
B182172431.333919%
C182131991.092626%
D1821912676.954279%

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 20138 18225 0 0 0.00% 0.00%
B 20138 18225 8 8 0.04% 0.04%
C 20138 18224 0 0 0.00% 0.00%
D 20138 18225 1019 1019 5.06% 5.59%

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 0 128 64290 142.52 2140 2090 436.4
A 0 226 19736 40.43 2140 2090 436.4
A 12 194 18056 36.58 2140 2090 436.4
B 5 255 210494 500.37 2148 2089 416.5
B 11 51 61003 141.45 2148 2089 416.5
B 12 111 47460 108.93 2148 2089 416.5
C 8 208 357782 732.09 2089 2100 485.8
C 8 128 18225 33.19 2089 2100 485.8
C 13 61 15969 28.55 2089 2100 485.8
D 1 52 3253322 6597.25 2047 1990 492.8
D 2 14 228198 459.0 2047 1990 492.8
D 5 233 205191 412.31 2047 1990 492.8

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