ASTROSAT CZTI

Data Quality Report

Orbit 10643

Creation date: 2024-06-27T16:01:54.555314
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/AS1T01_191T01_9000001536_10643cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10643cztM0_level2_quad_clean.evt
Size (bytes)599,270,40099,521,280
Size571.5 MB 94.9 MB
Events in quadrant A3,530,477646,675
Events in quadrant B4,614,678645,244
Events in quadrant C5,217,034616,234
Events in quadrant D4,301,454607,163

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150111
B0182770
C0203350
D0173440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71541071.495667%
B71544376.108471%
C715478811.014817%
D71541321.845122%

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 7154 7154 3 3 0.04% 0.04%
B 7154 7154 151 151 2.11% 2.11%
C 7154 7154 591 591 8.26% 8.26%
D 7154 7154 68 68 0.95% 0.95%

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 13 251 93697 518.68 861 844 179.0
A 15 239 56369 310.16 861 844 179.0
A 1 162 24736 133.46 861 844 179.0
B 4 239 1064559 6473.41 852 833 164.3
B 0 168 76961 463.28 852 833 164.3
B 0 219 73545 442.5 852 833 164.3
C 4 254 2041479 11007.15 794 799 185.4
C 14 234 65901 351.15 794 799 185.4
C 4 175 10464 52.13 794 799 185.4
D 12 233 559787 2752.07 828 804 203.1
D 8 195 199390 977.71 828 804 203.1
D 5 222 134536 658.41 828 804 203.1

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