ASTROSAT CZTI

Data Quality Report

Orbit 19691

Creation date: 2024-06-27T18:06:13.414078
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/AS1A05_075T03_9000002940_19691cztM0_level2.evt modeM0/AS1A05_075T03_9000002940_19691cztM0_level2_quad_clean.evt
Size (bytes)534,559,68095,581,440
Size509.8 MB 91.2 MB
Events in quadrant A3,395,687611,261
Events in quadrant B3,600,163617,926
Events in quadrant C3,522,280586,386
Events in quadrant D5,172,320567,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150070
B0154130
C0151340
D0203270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73481191.619488%
B73481411.918889%
C73481492.027763%
D73484355.919978%

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 7623 7349 0 0 0.00% 0.00%
B 7623 7349 15 15 0.20% 0.20%
C 7623 7350 0 0 0.00% 0.00%
D 7623 7349 302 302 3.96% 4.11%

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 13 210 23307 126.81 874 853 177.1
A 0 226 7606 38.14 874 853 177.1
A 3 137 7312 36.48 874 853 177.1
B 7 220 61926 370.8 866 843 164.7
B 4 216 34558 204.66 866 843 164.7
B 0 197 29104 171.56 866 843 164.7
C 14 238 131335 663.18 834 838 196.8
C 3 233 84318 424.24 834 838 196.8
C 7 247 43042 214.48 834 838 196.8
D 1 52 902288 4408.52 837 811 204.5
D 7 238 789426 3856.59 837 811 204.5
D 1 20 170790 831.25 837 811 204.5

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