ASTROSAT CZTI

Data Quality Report

Orbit 34446

Creation date: 2022-02-10T14:21:41.920631
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/AS1A10_058T05_9000004918_34446cztM0_level2.evt modeM0/AS1A10_058T05_9000004918_34446cztM0_level2_quad_clean.evt
Size (bytes)661,717,44087,226,560
Size631.1 MB 83.2 MB
Events in quadrant A3,389,310548,467
Events in quadrant B4,820,296548,187
Events in quadrant C3,974,686545,871
Events in quadrant D7,374,751503,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144483
B0188552
C0158582
D0270742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A712360.084234%
B71234626.486031%
C7123210.294820%
D71233585.025972%

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 10259 7125 0 0 0.00% 0.00%
B 10259 7125 305 305 2.97% 4.28%
C 10259 7125 8 8 0.08% 0.11%
D 10259 7125 298 298 2.90% 4.18%

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 38527 217.75 858 839 173.1
A 13 6 18262 100.66 858 839 173.1
A 10 255 13573 73.57 858 839 173.1
B 5 172 1180314 7409.25 828 808 159.2
B 0 229 137804 860.56 828 808 159.2
B 0 190 109115 680.35 828 808 159.2
C 4 254 338494 1751.72 834 839 192.8
C 15 214 300131 1552.7 834 839 192.8
C 3 233 35769 181.21 834 839 192.8
D 8 195 2571576 12711.41 819 795 202.2
D 7 80 537291 2652.74 819 795 202.2
D 12 235 487547 2406.78 819 795 202.2

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