ASTROSAT CZTI

Data Quality Report

Orbit 52995

Creation date: 2025-07-16T10:00:52.467446
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/AS1A13_003T01_9000006486_52995cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52995cztM0_level2_quad_clean.evt
Size (bytes)1,068,471,36082,851,840
Size1019.0 MB 79.0 MB
Events in quadrant A17,101,684120,741
Events in quadrant B5,308,021749,272
Events in quadrant C5,764,246645,547
Events in quadrant D10,803,146475,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0559012
B0210160
C0223480
D0372780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7427639486.091289%
B74275407.270769%
C74285627.565967%
D7428252233.952612%

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 7427 7427 5153 5153 69.38% 69.38%
B 7427 7427 281 281 3.78% 3.78%
C 7428 7428 417 417 5.61% 5.61%
D 7428 7428 1873 1873 25.22% 25.22%

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 9 191 13241371 117041.9 452 440 113.1
A 15 190 1112969 9834.09 452 440 113.1
A 7 206 632723 5589.0 452 440 113.1
B 10 254 631434 3598.71 802 772 175.2
B 10 63 580261 3306.7 802 772 175.2
B 5 172 402457 2292.11 802 772 175.2
C 12 254 1454887 6891.77 778 768 211.0
C 7 80 401072 1897.23 778 768 211.0
C 1 241 335406 1586.01 778 768 211.0
D 2 62 5349736 26586.91 697 663 201.2
D 8 176 949809 4717.61 697 663 201.2
D 0 5 280664 1391.71 697 663 201.2

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