ASTROSAT CZTI

Data Quality Report

Orbit 26415

Creation date: 2024-06-27T19:28:43.658989
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/AS1A09_127T02_9000003818_26415cztM0_level2.evt modeM0/AS1A09_127T02_9000003818_26415cztM0_level2_quad_clean.evt
Size (bytes)518,063,040105,903,360
Size494.1 MB 101.0 MB
Events in quadrant A3,256,041701,873
Events in quadrant B3,353,494724,702
Events in quadrant C3,594,966686,300
Events in quadrant D5,063,011659,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137230
B0139320
C0146820
D0192550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6228580.931278%
B6228570.915222%
C62271442.312510%
D62273926.295166%

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 7538 6229 26 26 0.34% 0.42%
B 7538 6229 4 4 0.05% 0.06%
C 7537 6228 37 37 0.49% 0.59%
D 7537 6227 320 320 4.25% 5.14%

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 15 192 96304 588.59 818 803 162.3
A 13 254 11606 66.58 818 803 162.3
A 0 226 7198 39.41 818 803 162.3
B 0 244 50197 326.78 826 809 151.1
B 0 230 22070 140.68 826 809 151.1
B 12 111 16634 104.71 826 809 151.1
C 2 16 223664 1205.31 801 806 184.9
C 14 238 128091 688.41 801 806 184.9
C 3 233 102462 549.8 801 806 184.9
D 1 52 1490153 8080.15 787 771 184.3
D 12 233 169474 915.24 787 771 184.3
D 7 80 162725 878.63 787 771 184.3

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