ASTROSAT CZTI

Data Quality Report

Orbit 42625

Creation date: 2024-06-27T22:42:22.702342
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/AS1A05_174T01_9000005820_42625cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42625cztM0_level2_quad_clean.evt
Size (bytes)368,475,84096,589,440
Size351.4 MB 92.1 MB
Events in quadrant A3,427,335644,796
Events in quadrant B2,784,055656,611
Events in quadrant C2,957,716633,991
Events in quadrant D4,004,274570,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138643
B0123542
C0125782
D0161212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5991340.567518%
B5991210.350526%
C5991310.517443%
D59912424.039392%

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 8645 5993 23 23 0.27% 0.38%
B 8645 5993 13 13 0.15% 0.22%
C 8645 5993 22 22 0.25% 0.37%
D 8645 5993 219 219 2.53% 3.65%

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 611066 4494.35 655 640 135.8
A 2 79 268667 1973.39 655 640 135.8
A 15 222 12650 88.43 655 640 135.8
B 10 246 88387 686.52 650 630 127.8
B 7 202 57977 448.63 650 630 127.8
B 0 168 36190 278.19 650 630 127.8
C 15 214 247715 1636.53 641 645 151.0
C 14 254 194834 1286.26 641 645 151.0
C 4 254 5098 29.5 641 645 151.0
D 2 249 591404 3771.88 631 613 156.6
D 13 249 559896 3570.72 631 613 156.6
D 1 52 124266 789.46 631 613 156.6

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