ASTROSAT CZTI

Data Quality Report

Orbit 50743

Creation date: 2025-02-14T06:14:29.979430
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_9000006450_50743cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50743cztM0_level2_quad_clean.evt
Size (bytes)806,126,40094,299,840
Size768.8 MB 89.9 MB
Events in quadrant A8,972,069538,640
Events in quadrant B4,175,110730,073
Events in quadrant C6,823,353601,080
Events in quadrant D9,314,443484,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315732
B0176422
C0252862
D0326148

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7183177824.752889%
B71832132.965335%
C718379511.067799%
D7182176724.603175%

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 7743 7185 1807 1807 23.34% 25.15%
B 7743 7183 94 94 1.21% 1.31%
C 7743 7184 653 653 8.43% 9.09%
D 7743 7184 1766 1766 22.81% 24.58%

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 4 4 5131342 28648.71 707 688 179.1
A 6 177 272386 1517.12 707 688 179.1
A 4 3 143451 797.16 707 688 179.1
B 7 0 370351 2302.63 756 727 160.5
B 5 172 189971 1178.92 756 727 160.5
B 10 247 139455 864.23 756 727 160.5
C 9 38 1082480 5441.04 717 709 198.8
C 15 231 818041 4110.98 717 709 198.8
C 12 247 607520 3052.11 717 709 198.8
D 8 176 2568640 13624.76 658 633 188.5
D 15 174 1671025 8862.39 658 633 188.5
D 2 249 715004 3790.15 658 633 188.5

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