ASTROSAT CZTI

Data Quality Report

Orbit 40982

Creation date: 2024-06-27T22:22:58.583708
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_9000005584_40982cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40982cztM0_level2_quad_clean.evt
Size (bytes)327,683,52090,872,640
Size312.5 MB 86.7 MB
Events in quadrant A2,910,174637,419
Events in quadrant B2,538,171646,848
Events in quadrant C2,764,820593,058
Events in quadrant D3,522,024519,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116813
B0107482
C0111022
D0138212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062160.316081%
B5062200.395101%
C5062941.856974%
D50624408.692217%

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 7155 5063 5 5 0.07% 0.10%
B 7155 5063 8 8 0.11% 0.16%
C 7155 5063 95 95 1.33% 1.88%
D 7155 5062 430 430 6.01% 8.49%

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 497148 4032.25 606 594 123.1
A 12 189 53306 428.05 606 594 123.1
A 3 1 9649 73.53 606 594 123.1
B 0 229 125389 1075.35 602 585 116.1
B 5 255 52828 450.14 602 585 116.1
B 12 111 14163 116.99 602 585 116.1
C 0 10 271838 2019.13 578 580 134.3
C 15 214 215737 1601.54 578 580 134.3
C 12 249 18284 131.78 578 580 134.3
D 13 249 580171 4232.11 558 541 137.0
D 2 249 507378 3700.62 558 541 137.0
D 12 233 168061 1223.13 558 541 137.0

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