ASTROSAT CZTI

Data Quality Report

Orbit 23660

Creation date: 2024-06-27T18:57:18.916714
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/AS1A07_160T07_9000003494_23660cztM0_level2.evt modeM0/AS1A07_160T07_9000003494_23660cztM0_level2_quad_clean.evt
Size (bytes)1,319,368,320229,132,800
Size1.2 GB 218.5 MB
Events in quadrant A8,772,0031,434,116
Events in quadrant B9,945,7061,446,679
Events in quadrant C8,887,9761,406,974
Events in quadrant D11,093,3641,369,763

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382194
B0412444
C0382484
D0458374

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185982651.424884%
B185994662.505511%
C185993822.053874%
D185998964.817463%

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 20943 18598 0 0 0.00% 0.00%
B 20944 18599 109 109 0.52% 0.59%
C 20944 18599 0 0 0.00% 0.00%
D 20944 18599 511 511 2.44% 2.75%

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 13 254 31396 63.68 2272 2219 458.2
A 3 137 20995 40.98 2272 2219 458.2
A 0 226 19429 37.56 2272 2219 458.2
B 3 64 695774 1598.56 2255 2193 433.9
B 0 229 144153 327.19 2255 2193 433.9
B 0 189 133756 303.22 2255 2193 433.9
C 14 238 342040 665.16 2183 2194 510.9
C 7 247 43858 81.55 2183 2194 510.9
C 13 61 15188 25.43 2183 2194 510.9
D 1 52 1219042 2282.17 2185 2120 533.2
D 12 233 648476 1212.15 2185 2120 533.2
D 9 85 468758 875.12 2185 2120 533.2

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