ASTROSAT CZTI

Data Quality Report

Orbit 20211121_A11_047T10_9000004778_level2

Creation date: 2025-12-29T23:55:25.715194
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/AS1A11_047T10_9000004778cztM0_level2.fits modeM0/AS1A11_047T10_9000004778cztM0_level2_quad_clean.evt
Size (bytes)847,313,280895,544,640
Size808.1 MB 854.1 MB
Events in quadrant A5,193,7885,259,803
Events in quadrant B4,820,7185,458,841
Events in quadrant C5,137,0605,392,933
Events in quadrant D4,324,5664,833,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02452780
B02561070
C01963210
D03086290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018400
B018420
C018420
D018440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03290
B03290
C03290
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9011274518.268599%
B9010775418.368939%
C901067460.827914%
D9009254786.080451%

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 123321 90118 0 0 0.00% 0.00%
B 123321 90045 0 0 0.00% 0.00%
C 123321 90119 0 0 0.00% 0.00%
D 123321 90057 0 0 0.00% 0.00%

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 0 29 4383 9.28 1355 1276 334.8
A 9 19 4253 8.89 1355 1276 334.8
A 7 110 4243 8.86 1355 1276 334.8
B 2 9 4039 11.21 1279 1224 251.2
B 3 80 3724 9.95 1279 1224 251.2
B 3 17 3357 8.49 1279 1224 251.2
C 1 81 4311 8.89 1360 1284 340.6
C 1 80 4243 8.69 1360 1284 340.6
C 3 187 3518 6.56 1360 1284 340.6
D 10 189 3265 6.48 1241 1135 328.4
D 4 160 3173 6.2 1241 1135 328.4
D 6 38 3123 6.05 1241 1135 328.4

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