ASTROSAT CZTI

Data Quality Report

Orbit 19867

Creation date: 2024-06-27T18:08:04.500766
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/AS1T03_118T01_9000002962_19867cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19867cztM0_level2_quad_clean.evt
Size (bytes)1,543,242,240202,095,360
Size1.4 GB 192.7 MB
Events in quadrant A11,507,4761,238,130
Events in quadrant B8,623,2531,281,676
Events in quadrant C13,142,8141,200,781
Events in quadrant D12,261,8121,170,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458383
B0368013
C0504893
D0482953

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178209235.179574%
B178212231.251333%
C1782113567.609001%
D1782111456.425004%

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 19595 17820 575 575 2.93% 3.23%
B 19596 17821 5 5 0.03% 0.03%
C 19596 17821 765 765 3.90% 4.29%
D 19596 17821 877 877 4.48% 4.92%

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 3365872 7877.85 2115 2070 427.0
A 0 226 18222 37.83 2115 2070 427.0
A 3 137 17831 36.91 2115 2070 427.0
B 0 230 97899 234.19 2133 2077 409.2
B 7 220 55183 129.79 2133 2077 409.2
B 12 111 51250 120.18 2133 2077 409.2
C 9 221 4897254 10300.15 2028 2040 475.3
C 14 238 309546 647.03 2028 2040 475.3
C 7 220 30065 58.97 2028 2040 475.3
D 1 52 4321304 8647.12 2057 1995 499.5
D 2 234 74841 145.83 2057 1995 499.5
D 12 218 44215 84.52 2057 1995 499.5

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