ASTROSAT CZTI

Data Quality Report

Orbit 39739

Creation date: 2024-06-27T22:08:25.332361
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_022T01_9000005494_39739cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39739cztM0_level2_quad_clean.evt
Size (bytes)353,424,96087,036,480
Size337.1 MB 83.0 MB
Events in quadrant A3,046,461592,782
Events in quadrant B2,549,172606,492
Events in quadrant C3,833,513555,178
Events in quadrant D3,256,123523,443

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123553
B0110562
C0147922
D0132992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51031021.998824%
B5103410.803449%
C51032605.095042%
D51032264.428767%

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 7017 5104 73 73 1.04% 1.43%
B 7017 5104 25 25 0.36% 0.49%
C 7017 5104 212 212 3.02% 4.15%
D 7017 5103 192 192 2.74% 3.76%

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 449622 3870.82 564 552 116.0
A 13 248 265696 2285.44 564 552 116.0
A 9 143 104366 894.84 564 552 116.0
B 5 255 96079 874.33 564 549 109.3
B 5 172 94904 863.58 564 549 109.3
B 10 246 55357 501.63 564 549 109.3
C 9 187 1121546 8811.58 545 549 127.2
C 15 208 308365 2419.58 545 549 127.2
C 15 214 222077 1741.32 545 549 127.2
D 12 227 607531 4577.51 545 531 132.6
D 13 171 156980 1179.81 545 531 132.6
D 2 250 122205 917.57 545 531 132.6

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