ASTROSAT CZTI

Data Quality Report

Orbit 20230427_A12_066T01_9000005584_level2

Creation date: 2023-04-29T22:34:07.397893
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_066T01_9000005584cztM0_level2.fits modeM0/AS1A12_066T01_9000005584cztM0_level2_quad_clean.evt
Size (bytes)868,308,480915,206,400
Size828.1 MB 872.8 MB
Events in quadrant A5,273,0365,623,770
Events in quadrant B5,013,1885,566,349
Events in quadrant C5,092,1165,243,071
Events in quadrant D4,399,9144,767,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019460
B019460
C019460
D019460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02055550
B02023230
C01996470
D02429150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03930
B03930
C03930
D03930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A950771700.178802%
B950779480.997087%
C950778250.867718%
D9507736023.788508%

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 134458 95071 0 0 0.00% 0.00%
B 134458 95057 0 0 0.00% 0.00%
C 134458 95052 0 0 0.00% 0.00%
D 134458 94969 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 4336 8.87 1372 1283 344.2
A 9 19 4241 8.59 1372 1283 344.2
A 0 29 4097 8.17 1372 1283 344.2
B 2 9 4213 11.42 1325 1261 258.5
B 3 80 3575 8.95 1325 1261 258.5
B 3 17 3506 8.68 1325 1261 258.5
C 1 81 4103 8.26 1344 1255 344.9
C 1 80 3969 7.87 1344 1255 344.9
C 3 202 3939 7.78 1344 1255 344.9
D 7 3 3259 6.31 1256 1143 335.6
D 10 189 3253 6.29 1256 1143 335.6
D 4 160 3202 6.14 1256 1143 335.6

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