ASTROSAT CZTI

Data Quality Report

Orbit 37265

Creation date: 2024-06-27T21:37:36.903981
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/AS1T04_087T01_9000005292_37265cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37265cztM0_level2_quad_clean.evt
Size (bytes)439,657,92077,892,480
Size419.3 MB 74.3 MB
Events in quadrant A3,246,495496,239
Events in quadrant B3,399,977494,740
Events in quadrant C3,265,958481,674
Events in quadrant D2,998,208470,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135523
B0140152
C0133332
D0130682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5950651.092437%
B5950881.478992%
C59501061.781513%
D5950350.588235%

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 7262 5951 33 33 0.45% 0.55%
B 7262 5951 36 36 0.50% 0.60%
C 7262 5951 80 80 1.10% 1.34%
D 7262 5951 26 26 0.36% 0.44%

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 10 83 290502 2096.49 678 664 138.2
A 15 237 229349 1654.15 678 664 138.2
A 15 223 30718 217.39 678 664 138.2
B 0 190 212789 1637.96 670 655 129.5
B 0 213 153968 1183.78 670 655 129.5
B 5 172 134107 1030.43 670 655 129.5
C 14 254 311136 2009.51 653 657 154.5
C 15 214 248778 1605.91 653 657 154.5
C 0 10 140083 902.4 653 657 154.5
D 12 218 94346 578.18 658 639 162.1
D 2 153 84409 516.87 658 639 162.1
D 13 249 74853 457.91 658 639 162.1

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