ASTROSAT CZTI

Data Quality Report

Orbit 20181110_T03_034T01_9000002500_level2

Creation date: 2025-11-25T18:51:20.651264
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/AS1T03_034T01_9000002500cztM0_level2.fits modeM0/AS1T03_034T01_9000002500cztM0_level2_quad_clean.evt
Size (bytes)435,870,720291,879,360
Size415.7 MB 278.4 MB
Events in quadrant A2,734,2101,560,423
Events in quadrant B2,603,6441,559,593
Events in quadrant C2,685,3381,495,140
Events in quadrant D2,159,3361,207,289

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0933630
B0963940
C0913140
D01631140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08980
B08980
C08980
D08980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A439026521.485126%
B439037571.724256%
C439037531.715145%
D43902768317.500342%

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 54245 43900 0 0 0.00% 0.00%
B 54245 43901 0 0 0.00% 0.00%
C 54245 43901 0 0 0.00% 0.00%
D 54245 43855 0 0 0.00% 0.00%

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 0 29 2585 10.77 711 666 178.2
A 0 30 2059 7.82 711 666 178.2
A 7 110 2052 7.78 711 666 178.2
B 2 9 2080 10.39 688 655 137.1
B 5 128 1734 7.87 688 655 137.1
B 2 8 1726 7.81 688 655 137.1
C 1 81 1997 7.31 709 664 182.4
C 1 80 1995 7.3 709 664 182.4
C 2 191 1803 6.25 709 664 182.4
D 3 14 1568 6.11 616 560 165.0
D 6 231 1561 6.07 616 560 165.0
D 6 67 1515 5.79 616 560 165.0

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