ASTROSAT CZTI

Data Quality Report

Orbit 28399

Creation date: 2024-06-27T19:51:21.284500
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_058T13_9000004088_28399cztM0_level2.evt modeM0/AS1A10_058T13_9000004088_28399cztM0_level2_quad_clean.evt
Size (bytes)510,655,68097,369,920
Size487.0 MB 92.9 MB
Events in quadrant A3,277,325645,805
Events in quadrant B3,497,786667,317
Events in quadrant C3,290,451620,182
Events in quadrant D4,978,446581,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135670
B0143260
C0135220
D0191580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215580.933226%
B6215931.496380%
C6215851.367659%
D62153615.808528%

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 7555 6216 2 2 0.03% 0.03%
B 7555 6216 13 13 0.17% 0.21%
C 7555 6216 0 0 0.00% 0.00%
D 7555 6216 299 299 3.96% 4.81%

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 8 192 10950 60.3 844 829 167.8
A 13 254 9675 52.71 844 829 167.8
A 3 137 7815 41.62 844 829 167.8
B 10 245 128885 810.35 845 827 158.0
B 10 246 41456 257.1 845 827 158.0
B 12 111 18739 113.35 845 827 158.0
C 14 238 130125 691.53 805 813 187.0
C 7 220 25298 130.94 805 813 187.0
C 13 61 5500 25.06 805 813 187.0
D 1 52 1228216 6544.07 788 769 187.6
D 8 195 472481 2514.91 788 769 187.6
D 13 238 131318 696.01 788 769 187.6

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