ASTROSAT CZTI

Data Quality Report

Orbit 40487

Creation date: 2024-06-27T22:16:42.315355
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/AS1A12_022T01_9000005540_40487cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40487cztM0_level2_quad_clean.evt
Size (bytes)355,124,16082,647,360
Size338.7 MB 78.8 MB
Events in quadrant A2,729,668590,486
Events in quadrant B2,697,532602,384
Events in quadrant C2,402,315574,152
Events in quadrant D4,906,599368,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112593
B0117392
C0105272
D0183432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5239110.209964%
B5239510.973468%
C523930.057263%
D5239176133.613285%

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 7092 5240 1 1 0.01% 0.02%
B 7092 5240 23 23 0.32% 0.44%
C 7092 5240 1 1 0.01% 0.02%
D 7092 5240 616 616 8.69% 11.76%

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 472366 4005.19 573 561 117.8
A 12 189 14818 121.03 573 561 117.8
A 2 79 14806 120.93 573 561 117.8
B 4 170 416177 3807.25 566 552 109.2
B 10 246 38921 351.47 566 552 109.2
B 12 111 13829 121.62 566 552 109.2
C 15 214 231444 1808.67 551 553 127.7
C 9 187 8072 58.9 551 553 127.7
C 0 10 5034 35.1 551 553 127.7
D 2 250 2722469 23906.43 459 445 113.9
D 12 191 194873 1707.58 459 445 113.9
D 12 227 54245 472.5 459 445 113.9

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