ASTROSAT CZTI

Data Quality Report

Orbit 37959

Creation date: 2024-06-27T21:46:40.766868
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/AS1A11_082T01_9000005356_37959cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37959cztM0_level2_quad_clean.evt
Size (bytes)429,998,40080,205,120
Size410.1 MB 76.5 MB
Events in quadrant A3,086,597509,388
Events in quadrant B3,181,526513,937
Events in quadrant C2,817,731525,361
Events in quadrant D3,547,829480,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127773
B0132602
C0119432
D0144032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5723160.279574%
B57231192.079329%
C5723240.419360%
D57232504.368338%

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 7216 5724 3 3 0.04% 0.05%
B 7216 5724 81 81 1.12% 1.42%
C 7216 5724 12 12 0.17% 0.21%
D 7216 5724 228 228 3.16% 3.98%

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 393155 3038.89 641 628 129.2
A 15 222 167764 1293.94 641 628 129.2
A 12 189 19420 145.48 641 628 129.2
B 5 172 457328 3723.32 636 620 122.7
B 4 81 75391 609.57 636 620 122.7
B 5 184 68848 556.23 636 620 122.7
C 15 214 246319 1690.95 623 626 145.3
C 0 10 114936 786.72 623 626 145.3
C 14 254 16924 112.17 623 626 145.3
D 12 227 578999 3915.72 609 594 147.7
D 1 52 146190 985.66 609 594 147.7
D 2 249 133148 897.37 609 594 147.7

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