ASTROSAT CZTI

Data Quality Report

Orbit 20170810_G07_065T01_9000001454_level2

Creation date: 2025-11-16T16:05:43.958702
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/AS1G07_065T01_9000001454cztM0_level2.fits modeM0/AS1G07_065T01_9000001454cztM0_level2_quad_clean.evt
Size (bytes)710,058,240689,437,440
Size677.2 MB 657.5 MB
Events in quadrant A4,344,6904,181,046
Events in quadrant B4,185,8524,205,161
Events in quadrant C4,240,9903,959,908
Events in quadrant D3,588,3263,390,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01617610
B01606050
C01539700
D01933530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015300
B015380
C015280
D015340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A750028151.086638%
B750039761.301281%
C749805400.720192%
D7498137124.950587%

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 87635 75214 0 0 0.00% 0.00%
B 87635 75202 0 0 0.00% 0.00%
C 87635 75213 0 0 0.00% 0.00%
D 87635 75120 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 4222 11.01 1131 1055 287.6
A 7 110 3572 8.75 1131 1055 287.6
A 9 19 3197 7.45 1131 1055 287.6
B 2 9 3589 11.38 1104 1047 223.2
B 12 226 2759 7.67 1104 1047 223.2
B 2 8 2755 7.65 1104 1047 223.2
C 1 80 3159 7.17 1120 1036 296.3
C 1 81 3018 6.69 1120 1036 296.3
C 12 241 2983 6.57 1120 1036 296.3
D 6 231 2653 6.31 1022 929 273.4
D 3 14 2608 6.14 1022 929 273.4
D 1 19 2570 6.0 1022 929 273.4

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