ASTROSAT CZTI

Data Quality Report

Orbit 53353

Creation date: 2025-08-09T14:33:50.021280
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_53353cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53353cztM0_level2_quad_clean.evt
Size (bytes)896,215,68066,369,600
Size854.7 MB 63.3 MB
Events in quadrant A3,843,684626,708
Events in quadrant B4,373,205644,399
Events in quadrant C11,664,702294,726
Events in quadrant D12,807,4386,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156751
B0173181
C0389442
D0423701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62611933.082575%
B62614427.059575%
C6260342754.744409%
D6260621399.249201%

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 7401 6261 128 128 1.73% 2.04%
B 7401 6261 306 306 4.13% 4.89%
C 7400 6260 3395 3395 45.88% 54.23%
D 7399 6259 3643 3643 49.24% 58.20%

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 360533 2123.3 673 657 169.5
A 3 62 146967 863.24 673 657 169.5
A 3 14 114220 670.03 673 657 169.5
B 10 247 566236 4043.49 657 634 139.9
B 5 185 255149 1819.53 657 634 139.9
B 0 171 170327 1213.14 657 634 139.9
C 15 178 5111160 39653.75 466 463 128.9
C 15 224 1827711 14177.57 466 463 128.9
C 15 158 1090324 8456.2 466 463 128.9
D 2 62 11690476 262445.12 147 140 44.5
D 6 239 235200 5277.04 147 140 44.5
D 11 245 79604 1783.95 147 140 44.5

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