ASTROSAT CZTI

Data Quality Report

Orbit 01173

Creation date: 2024-06-27T14:08:38.684807
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/AS1P01_997T02_9000000218_01173cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01173cztM0_level2_quad_clean.evt
Size (bytes)1,277,081,28081,990,720
Size1.2 GB 78.2 MB
Events in quadrant A6,947,225591,955
Events in quadrant B7,409,951593,840
Events in quadrant C6,945,820563,669
Events in quadrant D16,995,315330,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247172
B0260471
C0246691
D0553161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721170.297151%
B5721190.332110%
C5721380.664220%
D5721481884.216046%

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 6906 5722 205 205 2.97% 3.58%
B 6906 5722 304 304 4.40% 5.31%
C 6906 5722 241 241 3.49% 4.21%
D 6906 5722 5584 5584 80.86% 97.59%

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 12 243 113869 263.09 1778 1791 426.0
A 9 17 9888 19.01 1778 1791 426.0
A 11 79 7996 14.57 1778 1791 426.0
B 2 32 256180 592.68 1819 1832 429.1
B 15 22 88350 201.61 1819 1832 429.1
B 0 230 38537 85.53 1819 1832 429.1
C 9 83 274890 602.38 1629 1684 453.5
C 15 241 270316 592.29 1629 1684 453.5
C 3 111 19567 39.43 1629 1684 453.5
D 1 239 12698125 36698.23 1124 1163 346.0
D 10 125 61485 174.35 1124 1163 346.0
D 2 152 11137 28.83 1124 1163 346.0

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