ASTROSAT CZTI

Data Quality Report

Orbit 16393

Creation date: 2024-06-27T17:22:01.400744
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/AS1A05_069T05_9000002420_16393cztM0_level2.evt modeM0/AS1A05_069T05_9000002420_16393cztM0_level2_quad_clean.evt
Size (bytes)942,491,520183,032,640
Size898.8 MB 174.6 MB
Events in quadrant A6,861,2641,172,790
Events in quadrant B7,517,8171,182,166
Events in quadrant C6,877,7731,134,594
Events in quadrant D6,364,3921,112,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02780
B02780
C02780
D02780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295142
B0311002
C0289652
D0286992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136211831.343514%
B136212691.974892%
C136211651.211365%
D136211451.064533%

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 14607 13624 59 59 0.40% 0.43%
B 14607 13624 100 100 0.68% 0.73%
C 14607 13624 3 3 0.02% 0.02%
D 14607 13624 63 63 0.43% 0.46%

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 9 143 376661 1166.35 1603 1563 321.6
A 15 174 233003 719.65 1603 1563 321.6
A 15 223 76580 233.26 1603 1563 321.6
B 4 173 307769 1000.02 1601 1555 306.2
B 10 16 216192 700.95 1601 1555 306.2
B 15 35 204032 661.24 1601 1555 306.2
C 3 233 570752 1586.53 1540 1547 358.8
C 14 238 236342 654.44 1540 1547 358.8
C 10 169 41994 112.74 1540 1547 358.8
D 10 70 272558 712.19 1564 1517 380.6
D 12 218 70699 181.78 1564 1517 380.6
D 2 234 57149 146.18 1564 1517 380.6

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