ASTROSAT CZTI

Data Quality Report

Orbit 38981

Creation date: 2024-06-27T21:58:55.457711
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_057T01_9000005418_38981cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38981cztM0_level2_quad_clean.evt
Size (bytes)446,526,72096,379,200
Size425.8 MB 91.9 MB
Events in quadrant A3,018,748687,019
Events in quadrant B3,030,997685,789
Events in quadrant C2,757,586658,735
Events in quadrant D7,298,910506,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124003
B0125452
C0113972
D0254532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5442170.312385%
B54421262.315325%
C544240.073502%
D5442106019.478133%

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 7326 5443 7 7 0.10% 0.13%
B 7326 5443 93 93 1.27% 1.71%
C 7326 5443 0 0 0.00% 0.00%
D 7326 5442 1078 1078 14.71% 19.81%

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 447974 3410.32 651 639 131.2
A 13 248 23797 176.55 651 639 131.2
A 9 143 19053 140.38 651 639 131.2
B 5 172 458875 3742.84 640 621 122.4
B 15 32 22594 179.46 640 621 122.4
B 12 111 14643 114.52 640 621 122.4
C 15 214 239793 1616.09 637 640 148.0
C 3 233 22750 149.41 637 640 148.0
C 1 128 7009 43.04 637 640 148.0
D 12 227 2386928 17165.02 570 554 139.0
D 12 235 2104342 15132.4 570 554 139.0
D 2 249 336137 2413.82 570 554 139.0

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