ASTROSAT CZTI

Data Quality Report

Orbit 07781

Creation date: 2024-06-27T15:23:54.483935
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_132T01_9000001068_07781cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07781cztM0_level2_quad_clean.evt
Size (bytes)1,251,354,240221,319,360
Size1.2 GB 211.1 MB
Events in quadrant A8,540,7831,367,220
Events in quadrant B9,124,5491,387,377
Events in quadrant C8,446,2121,380,258
Events in quadrant D10,538,4301,297,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380305
B0392224
C0378544
D0440616

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184352901.573095%
B184353571.936534%
C184352121.149986%
D184346763.667137%

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 20735 18435 0 0 0.00% 0.00%
B 20735 18435 27 27 0.13% 0.15%
C 20735 18435 2 2 0.01% 0.01%
D 20735 18435 340 340 1.64% 1.84%

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 44524 94.39 2202 2148 448.9
A 0 226 21089 42.19 2202 2148 448.9
A 12 194 19545 38.75 2202 2148 448.9
B 4 239 238085 556.75 2214 2158 423.8
B 4 173 80851 185.7 2214 2158 423.8
B 4 81 73786 169.03 2214 2158 423.8
C 12 4 29197 53.77 2153 2161 502.8
C 13 61 16557 28.63 2153 2161 502.8
C 1 16 14948 25.43 2153 2161 502.8
D 1 52 1220098 2339.79 2128 2065 520.6
D 13 104 977310 1873.41 2128 2065 520.6
D 12 233 75358 140.79 2128 2065 520.6

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