ASTROSAT CZTI

Data Quality Report

Orbit 53357

Creation date: 2025-08-09T07:10:53.856404
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/AS1C09_011T08_9000006492_53357cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53357cztM0_level2_quad_clean.evt
Size (bytes)796,132,80084,271,680
Size759.3 MB 80.4 MB
Events in quadrant A4,762,249645,095
Events in quadrant B4,210,964720,211
Events in quadrant C16,141,34583,235
Events in quadrant D3,809,664614,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194952
B0176302
C0526905
D0167542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70225407.690117%
B70221992.833950%
C7021629089.588378%
D70211912.720410%

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 7667 7024 483 483 6.30% 6.88%
B 7667 7024 88 88 1.15% 1.25%
C 7666 7023 5967 5967 77.84% 84.96%
D 7666 7023 142 142 1.85% 2.02%

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 15 174 1051744 5844.12 712 693 179.8
A 0 8 499623 2774.18 712 693 179.8
A 12 115 218339 1210.17 712 693 179.8
B 0 171 206720 1325.67 727 700 155.4
B 2 249 143755 920.51 727 700 155.4
B 4 206 137862 882.59 727 700 155.4
C 15 178 6047368 54158.39 400 396 111.7
C 15 158 4763864 42662.97 400 396 111.7
C 15 224 1629016 14586.38 400 396 111.7
D 2 62 323861 1600.43 709 677 201.9
D 2 249 108329 533.1 709 677 201.9
D 8 176 92747 455.94 709 677 201.9

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