ASTROSAT CZTI

Data Quality Report

Orbit 41971

Creation date: 2024-06-27T22:35:11.299432
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_104T01_9000005728_41971cztM0_level2.fits modeM0/AS1A12_104T01_9000005728_41971cztM0_level2_quad_clean.evt
Size (bytes)306,843,84093,539,520
Size292.6 MB 89.2 MB
Events in quadrant A2,987,321627,396
Events in quadrant B2,496,321643,975
Events in quadrant C2,613,823607,478
Events in quadrant D2,818,101556,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122113
B0114592
C0113732
D0125492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A567790.158534%
B567750.088075%
C567740.070460%
D5677801.409195%

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 7200 5678 2 2 0.03% 0.04%
B 7200 5678 1 1 0.01% 0.02%
C 7200 5678 0 0 0.00% 0.00%
D 7200 5678 68 68 0.94% 1.20%

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 548787 4292.99 622 609 127.7
A 2 79 23646 180.41 622 609 127.7
A 13 6 9731 71.43 622 609 127.7
B 0 190 44995 372.04 614 598 119.3
B 5 255 17795 144.11 614 598 119.3
B 12 111 15204 122.39 614 598 119.3
C 15 214 251376 1778.7 605 606 141.0
C 13 61 4016 24.19 605 606 141.0
C 8 79 3964 23.82 605 606 141.0
D 13 249 227830 1527.24 602 585 148.8
D 2 120 78402 522.98 602 585 148.8
D 12 6 51264 340.6 602 585 148.8

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