ASTROSAT CZTI

Data Quality Report

Orbit 20127

Creation date: 2024-06-27T18:11:36.167210
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/AS1A05_180T01_9000002992_20127cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20127cztM0_level2_quad_clean.evt
Size (bytes)1,296,434,880183,058,560
Size1.2 GB 174.6 MB
Events in quadrant A13,118,5271,021,368
Events in quadrant B6,410,3561,259,735
Events in quadrant C6,948,5821,205,841
Events in quadrant D11,903,9271,153,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476393
B0275493
C0288343
D0442753

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13067324224.810592%
B130671130.864774%
C130672431.859646%
D13067146511.211449%

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 14227 13068 1911 1911 13.43% 14.62%
B 14227 13069 10 10 0.07% 0.08%
C 14227 13069 4 4 0.03% 0.03%
D 14227 13069 1546 1546 10.87% 11.83%

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 14 238 7358645 26925.49 1356 1335 273.2
A 14 254 292189 1064.44 1356 1335 273.2
A 14 237 219234 797.44 1356 1335 273.2
B 0 183 69011 222.35 1591 1552 303.4
B 12 111 36942 116.65 1591 1552 303.4
B 10 245 35055 110.43 1591 1552 303.4
C 3 233 712370 1995.18 1531 1547 356.3
C 14 238 240976 672.04 1531 1547 356.3
C 8 208 20586 53.44 1531 1547 356.3
D 1 52 6027645 16421.6 1510 1468 367.0
D 14 34 61134 162.59 1510 1468 367.0
D 2 234 57342 152.26 1510 1468 367.0

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