ASTROSAT CZTI

Data Quality Report

Orbit 40913

Creation date: 2024-06-27T22:22:08.677792
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_101T01_9000005578_40913cztM0_level2.fits modeM0/AS1T05_101T01_9000005578_40913cztM0_level2_quad_clean.evt
Size (bytes)333,164,16091,388,160
Size317.7 MB 87.2 MB
Events in quadrant A2,853,921605,730
Events in quadrant B2,552,492625,567
Events in quadrant C3,369,516594,025
Events in quadrant D3,117,304547,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120793
B0118662
C0137812
D0134032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A563780.141919%
B5637240.425758%
C56371713.033528%
D56371262.235232%

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 7309 5638 6 6 0.08% 0.11%
B 7309 5638 9 9 0.12% 0.16%
C 7309 5638 163 163 2.23% 2.89%
D 7309 5638 114 114 1.56% 2.02%

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 530046 4448.0 585 573 119.0
A 13 248 17113 138.95 585 573 119.0
A 13 6 12189 97.58 585 573 119.0
B 0 190 62503 549.79 588 572 112.6
B 5 255 61009 536.53 588 572 112.6
B 0 245 57376 504.28 588 572 112.6
C 14 254 769729 5819.65 569 572 132.2
C 15 214 236674 1786.41 569 572 132.2
C 0 10 113323 853.1 569 572 132.2
D 12 233 328745 2357.03 568 549 139.2
D 2 249 249412 1787.27 568 549 139.2
D 1 52 73984 527.39 568 549 139.2

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