ASTROSAT CZTI

Data Quality Report

Orbit 44197

Creation date: 2024-06-27T23:00:23.436412
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_074T08_9000005966_44197cztM0_level2.fits modeM0/AS1A13_074T08_9000005966_44197cztM0_level2_quad_clean.evt
Size (bytes)555,670,080116,095,680
Size529.9 MB 110.7 MB
Events in quadrant A5,068,827807,193
Events in quadrant B4,576,280825,420
Events in quadrant C3,432,954800,443
Events in quadrant D6,975,295618,426

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202812
B0181353
C0145502
D0253502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66511712.571042%
B66502293.443609%
C6650620.932331%
D6650120418.105263%

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 7871 6652 32 32 0.41% 0.48%
B 7870 6651 78 78 0.99% 1.17%
C 7870 6651 16 16 0.20% 0.24%
D 7870 6651 993 993 12.62% 14.93%

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 1681997 9952.63 824 808 168.9
A 14 254 75404 441.61 824 808 168.9
A 14 159 65166 381.0 824 808 168.9
B 0 219 490845 3094.65 814 792 158.4
B 0 200 275923 1737.43 814 792 158.4
B 5 172 149698 940.33 814 792 158.4
C 14 254 182568 957.73 811 817 189.8
C 4 254 66051 343.75 811 817 189.8
C 3 233 9273 44.56 811 817 189.8
D 11 176 3042066 16667.23 732 712 182.5
D 1 52 238805 1304.8 732 712 182.5
D 5 222 234471 1281.05 732 712 182.5

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