ASTROSAT CZTI

Data Quality Report

Orbit 23200

Creation date: 2024-06-27T18:51:12.107533
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/AS1T03_175T01_9000003428_23200cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23200cztM0_level2_quad_clean.evt
Size (bytes)448,064,64074,373,120
Size427.3 MB 70.9 MB
Events in quadrant A3,071,043461,210
Events in quadrant B3,146,249468,922
Events in quadrant C3,387,781448,801
Events in quadrant D3,548,171445,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129941
B0131522
C0138551
D0145771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132480.782779%
B6131570.929702%
C61311302.120372%
D61321081.761252%

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 7267 6132 0 0 0.00% 0.00%
B 7266 6131 5 5 0.07% 0.08%
C 7266 6131 26 26 0.36% 0.42%
D 7267 6132 45 45 0.62% 0.73%

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 8760 50.38 796 779 158.4
A 0 226 6994 39.23 796 779 158.4
A 3 137 6593 36.7 796 779 158.4
B 0 190 28041 182.63 788 770 149.3
B 12 111 17870 114.52 788 770 149.3
B 11 111 16103 102.68 788 770 149.3
C 0 10 207711 1161.49 764 772 178.2
C 14 238 120780 673.57 764 772 178.2
C 7 247 63481 351.97 764 772 178.2
D 1 52 236756 1244.89 777 756 189.6
D 13 153 231615 1217.77 777 756 189.6
D 12 233 96547 505.29 777 756 189.6

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