ASTROSAT CZTI

Data Quality Report

Orbit 40245

Creation date: 2024-06-27T22:14:05.215735
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/AS1T05_086T01_9000005534_40245cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40245cztM0_level2_quad_clean.evt
Size (bytes)316,736,64086,690,880
Size302.1 MB 82.7 MB
Events in quadrant A3,006,231579,824
Events in quadrant B2,706,900609,070
Events in quadrant C2,436,301582,528
Events in quadrant D3,190,447507,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119943
B0110642
C0102302
D0129972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4934971.965951%
B4934400.810701%
C4934260.526956%
D49342775.614106%

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 7027 4935 70 70 1.00% 1.42%
B 7027 4935 26 26 0.37% 0.53%
C 7027 4935 20 20 0.28% 0.41%
D 7027 4935 223 223 3.17% 4.52%

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 443857 3955.64 545 534 112.1
A 13 248 407192 3628.49 545 534 112.1
A 13 6 13605 116.62 545 534 112.1
B 7 202 277526 2592.85 551 537 106.8
B 5 255 196164 1831.23 551 537 106.8
B 0 221 20095 183.08 551 537 106.8
C 15 214 213280 1673.98 543 547 127.1
C 0 10 81521 637.18 543 547 127.1
C 1 16 12412 93.36 543 547 127.1
D 12 227 920016 7117.67 524 510 129.2
D 13 249 63685 489.02 524 510 129.2
D 9 19 37674 287.68 524 510 129.2

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