ASTROSAT CZTI

Data Quality Report

Orbit 20230415_A12_099T03_9000005570_level2

Creation date: 2023-04-19T12:12:50.525534
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/AS1A12_099T03_9000005570cztM0_level2.fits modeM0/AS1A12_099T03_9000005570cztM0_level2_quad_clean.evt
Size (bytes)875,499,840939,173,760
Size834.9 MB 895.7 MB
Events in quadrant A5,221,7025,598,911
Events in quadrant B5,042,8645,713,896
Events in quadrant C5,138,3085,495,414
Events in quadrant D4,371,3144,896,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02159780
B02043310
C02031920
D02476110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020040
B020040
C020040
D020040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A983325680.577635%
B983334580.465764%
C983334180.425086%
D9833328172.864755%

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 132771 98324 0 0 0.00% 0.00%
B 132771 98330 0 0 0.00% 0.00%
C 132772 98323 0 0 0.00% 0.00%
D 132771 98287 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 7 110 4318 8.83 1361 1269 345.4
A 9 19 4233 8.58 1361 1269 345.4
A 0 29 4173 8.41 1361 1269 345.4
B 2 9 4325 11.65 1333 1268 262.5
B 5 128 3541 8.66 1333 1268 262.5
B 3 17 3481 8.43 1333 1268 262.5
C 1 81 4227 8.46 1356 1262 350.5
C 1 80 4209 8.41 1356 1262 350.5
C 3 203 4103 8.1 1356 1262 350.5
D 10 189 3263 6.35 1251 1137 334.9
D 4 160 3184 6.11 1251 1137 334.9
D 7 3 3150 6.01 1251 1137 334.9

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