ASTROSAT CZTI

Data Quality Report

Orbit 20220725_C07_010T01_9000005246_level2

Creation date: 2022-07-29T18:12:54.540863
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/AS1C07_010T01_9000005246cztM0_level2_bc.evt modeM0/AS1C07_010T01_9000005246cztM0_level2_quad_clean.evt
Size (bytes)4,561,813,4401,552,397,760
Size4.2 GB 1.4 GB
Events in quadrant A32,437,78211,455,798
Events in quadrant B6,080,0262,461,754
Events in quadrant C39,329,42012,374,302
Events in quadrant D51,322,38511,756,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025760
B026810
C026780
D026720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05430
C05060
D05430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02756830
B01589560
C02726720
D03312190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1301675980.459410%
B13165811115584.427076%
C1301815950.457056%
D13005752003.998247%

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 203199 134347 75 75 0.04% 0.06%
B 203190 38869 10 10 0.00% 0.03%
C 203199 134362 106 106 0.05% 0.08%
D 203199 134106 1490 1490 0.73% 1.11%

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 10 83 4183809 2850.45 6676 6573 1465.5
A 15 223 765301 517.74 6676 6573 1465.5
A 9 143 709860 479.91 6676 6573 1465.5
B 5 172 334550 1402.25 1200 1175 237.7
B 0 229 306770 1285.4 1200 1175 237.7
B 0 213 172746 721.67 1200 1175 237.7
C 15 214 5252819 2974.67 8057 8089 1763.1
C 0 10 1839477 1038.71 8057 8089 1763.1
C 0 207 539821 301.58 8057 8089 1763.1
D 13 249 3991219 2229.54 8002 7823 1786.6
D 12 17 3859903 2156.04 8002 7823 1786.6
D 12 233 2182086 1216.95 8002 7823 1786.6

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