ASTROSAT CZTI

Data Quality Report

Orbit 51253

Creation date: 2025-03-20T14:33:18.862880
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/AS1C07_001T01_9000006454_51253cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51253cztM0_level2_quad_clean.evt
Size (bytes)680,760,000100,569,600
Size649.2 MB 95.9 MB
Events in quadrant A6,656,328655,322
Events in quadrant B4,644,375736,931
Events in quadrant C9,375,716509,123
Events in quadrant D3,940,696620,762

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250130
B0190580
C0328710
D0173120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75163995.308675%
B75171572.088599%
C7517205227.298124%
D75171011.343621%

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 7516 7516 297 297 3.95% 3.95%
B 7517 7517 76 76 1.01% 1.01%
C 7517 7517 1843 1843 24.52% 24.52%
D 7517 7517 90 90 1.20% 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 12 3 1376153 7434.13 749 729 185.0
A 12 250 772807 4173.06 749 729 185.0
A 12 80 402245 2170.18 749 729 185.0
B 4 171 665721 4065.42 759 732 163.6
B 10 254 250531 1527.15 759 732 163.6
B 7 252 169238 1030.16 759 732 163.6
C 4 12 5475412 30056.09 652 646 182.2
C 15 205 282838 1549.21 652 646 182.2
C 3 233 180572 987.78 652 646 182.2
D 10 181 205363 1000.6 729 707 204.5
D 8 176 189799 924.5 729 707 204.5
D 2 120 154905 753.9 729 707 204.5

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