ASTROSAT CZTI

Data Quality Report

Orbit 44985

Creation date: 2024-10-09T16:50:59.371401
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/AS1A13_044T02_9000006038_44985cztM0_level2.fits modeM0/AS1A13_044T02_9000006038_44985cztM0_level2_quad_clean.evt
Size (bytes)710,029,440115,407,360
Size677.1 MB 110.1 MB
Events in quadrant A6,293,566813,441
Events in quadrant B4,443,341849,260
Events in quadrant C3,504,879810,198
Events in quadrant D11,457,653497,125

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241202
B0184002
C0159372
D0392192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75332743.637329%
B75331872.482411%
C7532350.464684%
D7532268135.594796%

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 7733 7534 4 4 0.05% 0.05%
B 7733 7534 48 48 0.62% 0.64%
C 7732 7533 7 7 0.09% 0.09%
D 7732 7533 2356 2356 30.47% 31.28%

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 10 83 2859790 15715.4 867 848 181.9
A 13 248 30297 161.88 867 848 181.9
A 0 243 29242 156.08 867 848 181.9
B 5 255 220573 1274.97 870 842 172.3
B 4 158 152547 880.25 870 842 172.3
B 4 171 129750 747.98 870 842 172.3
C 12 2 89936 439.85 858 864 202.5
C 3 233 21693 102.86 858 864 202.5
C 1 3 20309 96.02 858 864 202.5
D 12 33 1936033 10359.44 731 707 186.8
D 13 249 1296362 6935.4 731 707 186.8
D 11 241 1267120 6778.87 731 707 186.8

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