ASTROSAT CZTI

Data Quality Report

Orbit 42780

Creation date: 2024-06-27T22:44:08.928748
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_013T01_9000005822_42780cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42780cztM0_level2_quad_clean.evt
Size (bytes)288,455,04086,137,920
Size275.1 MB 82.1 MB
Events in quadrant A2,750,976585,403
Events in quadrant B2,523,432593,701
Events in quadrant C2,394,464568,588
Events in quadrant D2,629,224518,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109706
B01053711
C099056
D0112637

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4866120.246609%
B4863330.678593%
C486670.143855%
D4866831.705713%

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 7021 4870 7 7 0.10% 0.14%
B 7021 4867 24 24 0.34% 0.49%
C 7021 4869 2 2 0.03% 0.04%
D 7021 4869 78 78 1.11% 1.60%

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 529501 4598.15 561 550 115.0
A 13 248 29205 249.1 561 550 115.0
A 12 189 14171 118.41 561 550 115.0
B 3 112 146072 1366.11 554 540 106.5
B 0 229 55803 518.75 554 540 106.5
B 5 172 42726 396.0 554 540 106.5
C 15 214 197634 1559.07 548 553 126.4
C 14 254 42389 330.96 548 553 126.4
C 15 208 9701 72.37 548 553 126.4
D 13 249 297758 2251.77 543 528 132.0
D 2 249 97352 733.53 543 528 132.0
D 5 171 66429 499.26 543 528 132.0

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