ASTROSAT CZTI

Data Quality Report

Orbit 38455

Creation date: 2024-06-27T21:52:59.341356
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_018T01_9000005386_38455cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38455cztM0_level2_quad_clean.evt
Size (bytes)392,258,880104,345,280
Size374.1 MB 99.5 MB
Events in quadrant A3,349,415697,777
Events in quadrant B3,520,533699,845
Events in quadrant C3,027,760691,014
Events in quadrant D4,125,454624,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139243
B0148432
C0130622
D0167552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6387150.234852%
B63871562.442461%
C638780.125254%
D63872063.225301%

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 7700 6388 9 9 0.12% 0.14%
B 7700 6388 79 79 1.03% 1.24%
C 7700 6388 2 2 0.03% 0.03%
D 7700 6388 187 187 2.43% 2.93%

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 418805 2915.07 704 690 143.4
A 9 143 87643 606.23 704 690 143.4
A 12 189 42324 290.27 704 690 143.4
B 0 183 237351 1759.15 695 676 134.5
B 15 201 236224 1750.77 695 676 134.5
B 4 232 169507 1254.88 695 676 134.5
C 15 214 267856 1654.12 691 694 161.5
C 14 254 33960 205.96 691 694 161.5
C 3 233 15715 93.0 691 694 161.5
D 13 249 489278 2956.45 679 658 165.3
D 12 235 259792 1567.92 679 658 165.3
D 13 200 185670 1119.44 679 658 165.3

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