ASTROSAT CZTI

Data Quality Report

Orbit 33251

Creation date: 2024-06-27T20:46:38.834363
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/AS1A11_046T01_9000004776_33251cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33251cztM0_level2_quad_clean.evt
Size (bytes)532,828,800103,331,520
Size508.1 MB 98.5 MB
Events in quadrant A4,531,236686,815
Events in quadrant B4,242,676699,708
Events in quadrant C2,661,105707,176
Events in quadrant D4,361,708682,919

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170413
B0159192
C0108702
D0165152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502968513.620998%
B50294228.391330%
C5029811.610658%
D50291222.425930%

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 7181 5030 449 449 6.25% 8.93%
B 7181 5030 338 338 4.71% 6.72%
C 7181 5030 59 59 0.82% 1.17%
D 7181 5030 108 108 1.50% 2.15%

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 15 169 2251257 19586.41 585 576 114.9
A 13 6 14760 123.44 585 576 114.9
A 13 254 8549 69.38 585 576 114.9
B 5 172 938923 8492.04 594 579 110.5
B 5 200 590220 5336.27 594 579 110.5
B 0 219 162535 1465.71 594 579 110.5
C 0 10 251551 1834.54 598 604 136.8
C 3 233 28800 206.13 598 604 136.8
C 10 49 12783 89.03 598 604 136.8
D 8 195 1310753 8079.51 599 588 162.2
D 2 250 351431 2163.57 599 588 162.2
D 2 249 88312 540.98 599 588 162.2

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