ASTROSAT CZTI

Data Quality Report

Orbit 23256

Creation date: 2024-06-27T18:51:55.939214
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/AS1A08_004T03_9000003438_23256cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23256cztM0_level2_quad_clean.evt
Size (bytes)462,225,60096,814,080
Size440.8 MB 92.3 MB
Events in quadrant A3,195,202632,687
Events in quadrant B3,261,285642,049
Events in quadrant C3,252,445604,374
Events in quadrant D3,843,187594,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136751
B0138051
C0137901
D0155301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6577320.486544%
B6577460.699407%
C6577731.109929%
D65771011.535655%

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 7598 6578 0 0 0.00% 0.00%
B 7598 6578 2 2 0.03% 0.03%
C 7598 6578 1 1 0.01% 0.02%
D 7598 6578 66 66 0.87% 1.00%

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 10118 55.72 827 810 167.1
A 3 137 7232 38.44 827 810 167.1
A 0 226 7073 37.49 827 810 167.1
B 12 111 18990 114.85 821 802 158.4
B 3 64 18195 109.83 821 802 158.4
B 11 111 17178 103.41 821 802 158.4
C 14 238 124683 673.29 781 789 184.0
C 0 207 57487 308.12 781 789 184.0
C 7 247 9307 46.29 781 789 184.0
D 1 52 344389 1781.34 795 772 192.9
D 12 233 169355 873.95 795 772 192.9
D 2 152 63634 325.88 795 772 192.9

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