ASTROSAT CZTI

Data Quality Report

Orbit 32950

Creation date: 2024-06-27T20:44:01.034270
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/AS1T04_065T01_9000004750_32950cztM0_level2.evt modeM0/AS1T04_065T01_9000004750_32950cztM0_level2_quad_clean.evt
Size (bytes)627,264,00099,636,480
Size598.2 MB 95.0 MB
Events in quadrant A2,564,465702,984
Events in quadrant B4,220,582686,922
Events in quadrant C2,582,402714,634
Events in quadrant D9,243,533513,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114982
B0162631
C0116331
D0313911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569470.122936%
B569460210.572532%
C5694150.263435%
D5694224539.427468%

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 7068 5695 1 1 0.01% 0.02%
B 7068 5695 422 422 5.97% 7.41%
C 7068 5695 9 9 0.13% 0.16%
D 7068 5695 2067 2067 29.24% 36.29%

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 0 191 24024 181.22 645 633 129.1
A 14 238 15708 116.79 645 633 129.1
A 3 252 13757 101.68 645 633 129.1
B 5 172 1572841 13343.25 619 604 117.8
B 15 54 49637 416.13 619 604 117.8
B 5 200 39268 328.13 619 604 117.8
C 1 241 34218 232.61 631 634 144.4
C 0 10 29153 197.53 631 634 144.4
C 15 159 15632 103.88 631 634 144.4
D 12 227 4457171 34603.04 500 488 128.8
D 8 195 1098968 8528.93 500 488 128.8
D 7 80 570288 4424.1 500 488 128.8

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