ASTROSAT CZTI

Data Quality Report

Orbit 42335

Creation date: 2024-06-27T22:39:08.067817
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/AS1C07_001T10_9000005796_42335cztM0_level2.fits modeM0/AS1C07_001T10_9000005796_42335cztM0_level2_quad_clean.evt
Size (bytes)381,205,440102,447,360
Size363.5 MB 97.7 MB
Events in quadrant A3,350,631681,531
Events in quadrant B2,919,131690,113
Events in quadrant C3,064,561675,744
Events in quadrant D4,283,656612,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139422
B0132652
C0132312
D0172302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633590.142068%
B6335230.363062%
C633560.094712%
D63352443.851618%

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 9019 6337 5 5 0.06% 0.08%
B 9019 6337 9 9 0.10% 0.14%
C 9019 6337 4 4 0.04% 0.06%
D 9019 6337 192 192 2.13% 3.03%

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 660903 4673.72 681 666 141.3
A 13 248 20156 137.97 681 666 141.3
A 7 3 18811 128.45 681 666 141.3
B 5 172 67689 510.59 677 659 131.3
B 0 230 61802 465.75 677 659 131.3
B 4 141 57832 435.51 677 659 131.3
C 15 214 268833 1722.11 668 672 155.7
C 9 54 135852 868.12 668 672 155.7
C 5 250 26157 163.66 668 672 155.7
D 5 222 402304 2503.83 659 642 160.4
D 12 218 296311 1843.11 659 642 160.4
D 13 249 189320 1176.16 659 642 160.4

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