ASTROSAT CZTI

Data Quality Report

Orbit 28665

Creation date: 2024-06-27T19:54:40.611499
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/AS1A10_073T08_9000004112_28665cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28665cztM0_level2_quad_clean.evt
Size (bytes)672,606,720107,760,960
Size641.4 MB 102.8 MB
Events in quadrant A3,942,163715,329
Events in quadrant B6,210,806693,596
Events in quadrant C3,791,201681,065
Events in quadrant D5,919,496652,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164522
B0235042
C0159732
D0225842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74791782.379997%
B748091912.286096%
C74802703.609626%
D74803855.147059%

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 7558 7478 30 30 0.40% 0.40%
B 7561 7481 491 491 6.49% 6.56%
C 7560 7481 0 0 0.00% 0.00%
D 7560 7481 226 226 2.99% 3.02%

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 15 174 280831 1453.43 946 926 192.6
A 13 254 13206 63.77 946 926 192.6
A 3 137 9124 42.57 946 926 192.6
B 10 245 2625253 15160.59 900 880 173.1
B 12 111 21156 117.13 900 880 173.1
B 11 111 19370 106.81 900 880 173.1
C 14 238 199863 943.16 891 898 211.0
C 14 254 80693 378.25 891 898 211.0
C 2 16 36938 170.84 891 898 211.0
D 1 52 1188939 5492.21 902 878 216.3
D 8 195 975869 4507.22 902 878 216.3
D 13 104 191715 882.21 902 878 216.3

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