ASTROSAT CZTI

Data Quality Report

Orbit 04351

Creation date: 2024-06-27T14:40:44.380900
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/AS1G05_219T01_9000000540_04351cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04351cztM0_level2_quad_clean.evt
Size (bytes)766,393,92054,671,040
Size730.9 MB 52.1 MB
Events in quadrant A3,178,155326,682
Events in quadrant B12,105,074223,521
Events in quadrant C4,266,428317,515
Events in quadrant D3,201,013312,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139993
B0406789
C0174562
D0144212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6795560.824135%
B6794332748.969679%
C67953445.062546%
D6795460.676968%

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 7680 6795 7 7 0.09% 0.10%
B 7680 6794 2792 2792 36.35% 41.10%
C 7679 6794 244 244 3.18% 3.59%
D 7680 6795 9 9 0.12% 0.13%

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 15 234 45141 272.94 790 773 162.6
A 13 251 42586 257.22 790 773 162.6
A 13 14 32438 194.8 790 773 162.6
B 3 0 9287111 70299.32 678 661 132.1
B 14 167 76244 572.17 678 661 132.1
B 4 170 42683 318.11 678 661 132.1
C 9 247 1126814 6369.81 749 754 176.8
C 9 16 164208 924.61 749 754 176.8
C 9 54 16590 89.58 749 754 176.8
D 2 136 139217 739.2 759 737 187.3
D 2 63 37825 197.97 759 737 187.3
D 13 53 30085 156.66 759 737 187.3

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