ASTROSAT CZTI

Data Quality Report

Orbit 15764

Creation date: 2024-06-27T17:13:34.946338
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/AS1G08_028T01_9000002334_15764cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15764cztM0_level2_quad_clean.evt
Size (bytes)427,944,96070,994,880
Size408.1 MB 67.7 MB
Events in quadrant A3,102,948431,426
Events in quadrant B3,225,208446,700
Events in quadrant C3,130,402421,231
Events in quadrant D3,071,766409,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131373
B0133622
C0131322
D0133682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6324560.885515%
B6324861.359899%
C6324831.312460%
D6324380.600886%

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 7450 6326 0 0 0.00% 0.00%
B 7450 6326 1 1 0.01% 0.02%
C 7450 6326 0 0 0.00% 0.00%
D 7450 6326 13 13 0.17% 0.21%

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 9 143 14963 87.52 800 785 162.0
A 4 2 10836 62.04 800 785 162.0
A 0 226 7119 39.1 800 785 162.0
B 4 173 24714 156.56 804 785 152.8
B 4 251 19337 121.38 804 785 152.8
B 12 111 17820 111.46 804 785 152.8
C 14 238 118398 656.08 766 773 179.3
C 3 233 13929 73.38 766 773 179.3
C 7 247 6315 30.91 766 773 179.3
D 1 52 133235 644.57 762 746 205.5
D 5 51 24368 114.92 762 746 205.5
D 2 234 22179 104.27 762 746 205.5

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