ASTROSAT CZTI

Data Quality Report

Orbit 51322

Creation date: 2025-03-25T05:31:03.234161
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_001T03_9000006456_51322cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51322cztM0_level2_quad_clean.evt
Size (bytes)724,158,72089,449,920
Size690.6 MB 85.3 MB
Events in quadrant A6,280,465607,256
Events in quadrant B4,940,578666,607
Events in quadrant C9,035,137441,730
Events in quadrant D6,051,296542,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232652
B0191712
C0311783
D0226442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64513004.650442%
B64513405.270501%
C6450214933.317829%
D64505528.558140%

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 7551 6452 212 212 2.81% 3.29%
B 7551 6452 201 201 2.66% 3.12%
C 7550 6451 2054 2054 27.21% 31.84%
D 7550 6451 545 545 7.22% 8.45%

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 2603902 15754.86 665 648 165.2
A 12 194 298639 1803.44 665 648 165.2
A 4 175 207646 1252.75 665 648 165.2
B 5 185 408770 2875.03 672 650 142.0
B 10 31 367584 2584.89 672 650 142.0
B 0 197 345274 2427.73 672 650 142.0
C 4 12 3862260 24769.03 564 561 155.9
C 15 148 1755079 11253.52 564 561 155.9
C 3 233 358624 2296.63 564 561 155.9
D 11 176 1195903 6740.55 636 615 177.3
D 8 176 453408 2553.42 636 615 177.3
D 6 175 313255 1763.06 636 615 177.3

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