ASTROSAT CZTI

Data Quality Report

Orbit 43942

Creation date: 2024-06-27T22:57:28.363497
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_024T02_9000005918_43942cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43942cztM0_level2_quad_clean.evt
Size (bytes)515,154,240116,035,200
Size491.3 MB 110.7 MB
Events in quadrant A5,146,570776,513
Events in quadrant B4,381,351793,694
Events in quadrant C3,460,056760,581
Events in quadrant D5,511,051670,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205850
B0179830
C0155660
D0214170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73451722.341729%
B73461652.246120%
C7346450.612578%
D73464165.662946%

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 7345 7345 102 102 1.39% 1.39%
B 7346 7346 101 101 1.37% 1.37%
C 7346 7346 30 30 0.41% 0.41%
D 7346 7346 346 346 4.71% 4.71%

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 1084802 6588.46 796 780 164.5
A 15 222 669560 4064.71 796 780 164.5
A 15 223 196033 1186.71 796 780 164.5
B 5 235 498217 3226.78 788 764 154.2
B 0 200 300134 1941.9 788 764 154.2
B 5 172 143594 926.48 788 764 154.2
C 14 254 206868 1135.33 772 775 181.5
C 3 233 169412 928.99 772 775 181.5
C 15 157 27049 144.74 772 775 181.5
D 13 249 633534 3341.21 758 733 189.4
D 1 52 477682 2518.3 758 733 189.4
D 5 235 224361 1180.76 758 733 189.4

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