ASTROSAT CZTI

Data Quality Report

Orbit 12530

Creation date: 2024-06-27T16:28:43.821715
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/AS1A04_230T01_9000001854_12530cztM0_level2.evt modeM0/AS1A04_230T01_9000001854_12530cztM0_level2_quad_clean.evt
Size (bytes)541,992,96063,195,840
Size516.9 MB 60.3 MB
Events in quadrant A3,568,462374,887
Events in quadrant B3,459,511378,689
Events in quadrant C3,080,574377,297
Events in quadrant D5,868,106331,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147652
B0143821
C0133841
D0218221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6452470.728456%
B6452610.945443%
C6452340.526968%
D645278812.213267%

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 7543 6454 1 1 0.01% 0.02%
B 7542 6453 12 12 0.16% 0.19%
C 7543 6453 0 0 0.00% 0.00%
D 7543 6454 699 699 9.27% 10.83%

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 1 162 143558 877.3 803 788 162.7
A 1 178 90091 548.75 803 788 162.7
A 1 161 74953 455.73 803 788 162.7
B 4 239 173634 1125.36 803 784 153.6
B 0 205 65099 418.73 803 784 153.6
B 0 230 33072 210.21 803 784 153.6
C 3 233 12919 67.09 785 791 180.8
C 13 61 5857 28.02 785 791 180.8
C 9 221 4164 18.66 785 791 180.8
D 1 52 2784067 15230.34 750 729 182.7
D 8 195 146416 797.19 750 729 182.7
D 7 71 32637 174.6 750 729 182.7

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