ASTROSAT CZTI

Data Quality Report

Orbit 21842

Creation date: 2024-06-27T18:32:54.486158
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/AS1A07_004T01_9000003230_21842cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21842cztM0_level2_quad_clean.evt
Size (bytes)485,510,40095,175,360
Size463.0 MB 90.8 MB
Events in quadrant A3,159,151627,175
Events in quadrant B3,825,233629,507
Events in quadrant C3,238,890615,457
Events in quadrant D4,059,457576,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131902
B0151832
C0132802
D0160622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204250.402966%
B62042403.868472%
C6204651.047711%
D62041332.143778%

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 7564 6205 0 0 0.00% 0.00%
B 7564 6205 164 164 2.17% 2.64%
C 7564 6205 0 0 0.00% 0.00%
D 7564 6205 113 113 1.49% 1.82%

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 14 235 26176 155.49 813 801 163.2
A 13 254 12148 69.53 813 801 163.2
A 0 226 7234 39.42 813 801 163.2
B 3 64 525358 3483.13 805 788 150.6
B 0 230 36779 238.98 805 788 150.6
B 0 190 36168 234.92 805 788 150.6
C 14 238 123880 682.19 777 782 180.4
C 3 248 75693 415.15 777 782 180.4
C 0 10 6206 30.06 777 782 180.4
D 1 52 291238 1565.33 769 749 185.6
D 7 38 280879 1509.51 769 749 185.6
D 12 227 191122 1025.84 769 749 185.6

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