ASTROSAT CZTI

Data Quality Report

Orbit 37625

Creation date: 2024-06-27T21:42:21.641582
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/AS1A11_075T01_9000005342_37625cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37625cztM0_level2_quad_clean.evt
Size (bytes)479,044,80069,537,600
Size456.9 MB 66.3 MB
Events in quadrant A3,762,355412,659
Events in quadrant B3,200,581434,371
Events in quadrant C3,021,860439,158
Events in quadrant D4,119,948404,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151153
B0134722
C0125862
D0165372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59462554.288597%
B59461642.758157%
C5946340.571813%
D59463856.474941%

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 9830 5948 224 224 2.28% 3.77%
B 9829 5945 87 87 0.89% 1.46%
C 9830 5947 34 34 0.35% 0.57%
D 9830 5947 364 364 3.70% 6.12%

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 15 222 536016 4036.98 656 643 132.6
A 10 83 320200 2409.62 656 643 132.6
A 13 248 247941 1864.75 656 643 132.6
B 5 172 329158 2592.22 661 643 126.7
B 0 189 62499 488.09 661 643 126.7
B 4 232 54511 425.06 661 643 126.7
C 15 214 270098 1765.69 658 663 152.6
C 0 10 117396 764.99 658 663 152.6
C 14 254 61051 395.74 658 663 152.6
D 12 233 438463 2865.32 630 612 152.8
D 12 227 419767 2742.97 630 612 152.8
D 2 249 283885 1853.75 630 612 152.8

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