ASTROSAT CZTI

Data Quality Report

Orbit 39709

Creation date: 2024-06-27T22:08:03.691648
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_9000005494_39709cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39709cztM0_level2_quad_clean.evt
Size (bytes)373,245,12090,069,120
Size356.0 MB 85.9 MB
Events in quadrant A3,322,985603,169
Events in quadrant B2,910,881630,761
Events in quadrant C3,587,107598,052
Events in quadrant D3,608,991546,859

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130033
B0119082
C0140312
D0141692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49682274.569243%
B4968991.992754%
C49681022.053140%
D49682134.287440%

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 7091 4969 159 159 2.24% 3.20%
B 7091 4969 46 46 0.65% 0.93%
C 7091 4969 88 88 1.24% 1.77%
D 7091 4969 184 184 2.59% 3.70%

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 13 248 587561 5141.16 566 556 114.2
A 10 83 430395 3764.66 566 556 114.2
A 15 174 68929 598.83 566 556 114.2
B 5 172 505547 4655.42 573 559 108.5
B 5 255 74048 677.49 573 559 108.5
B 0 190 41071 373.48 573 559 108.5
C 15 208 634955 4882.9 564 568 129.9
C 9 187 509499 3917.26 564 568 129.9
C 15 214 203284 1560.31 564 568 129.9
D 12 233 663240 4832.08 559 544 137.1
D 13 249 381955 2781.08 559 544 137.1
D 13 171 198680 1444.72 559 544 137.1

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