ASTROSAT CZTI

Data Quality Report

Orbit 47335

Creation date: 2024-06-29T16:59:33.588218
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/AS1A13_037T01_9000006318_47335cztM0_level2.fits modeM0/AS1A13_037T01_9000006318_47335cztM0_level2_quad_clean.evt
Size (bytes)732,666,240111,251,520
Size698.7 MB 106.1 MB
Events in quadrant A12,471,437666,458
Events in quadrant B3,363,798797,538
Events in quadrant C3,148,390748,568
Events in quadrant D7,569,950644,296

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421442
B0151960
C0150100
D0275620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7346166322.638170%
B7346270.367547%
C734760.081666%
D73476068.248265%

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 7346 7346 1409 1409 19.18% 19.18%
B 7346 7346 3 3 0.04% 0.04%
C 7347 7347 1 1 0.01% 0.01%
D 7347 7347 492 492 6.70% 6.70%

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 15 235 5791862 35785.68 773 756 161.8
A 10 83 3360561 20761.65 773 756 161.8
A 9 191 280093 1726.14 773 756 161.8
B 5 255 111141 689.82 803 776 160.0
B 12 111 21160 127.41 803 776 160.0
B 11 111 19460 116.78 803 776 160.0
C 0 207 46527 245.16 784 786 186.6
C 1 3 27179 141.46 784 786 186.6
C 3 233 16466 84.04 784 786 186.6
D 6 112 3409621 17437.68 765 738 195.5
D 10 204 623089 3183.55 765 738 195.5
D 2 165 198549 1011.88 765 738 195.5

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