ASTROSAT CZTI

Data Quality Report

Orbit 28490

Creation date: 2024-06-27T19:52:22.302136
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/AS1A10_110T04_9000004094_28490cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28490cztM0_level2_quad_clean.evt
Size (bytes)824,765,760101,260,800
Size786.6 MB 96.6 MB
Events in quadrant A3,595,670674,892
Events in quadrant B7,049,358653,313
Events in quadrant C3,662,189666,688
Events in quadrant D10,181,516566,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154972
B0259312
C0154312
D0352015

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72471141.573065%
B7248116316.045806%
C72482233.076711%
D7247256035.324962%

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 8732 7247 0 0 0.00% 0.00%
B 8733 7248 777 777 8.90% 10.72%
C 8733 7249 0 0 0.00% 0.00%
D 8731 7247 2327 2327 26.65% 32.11%

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 15 174 34290 180.13 913 893 185.4
A 1 113 24554 127.62 913 893 185.4
A 13 254 12456 62.36 913 893 185.4
B 10 245 3573296 21465.96 864 842 166.4
B 0 230 37513 220.35 864 842 166.4
B 12 111 20535 118.33 864 842 166.4
C 14 238 142940 686.66 885 892 206.9
C 7 247 67255 320.8 885 892 206.9
C 13 61 6005 24.72 885 892 206.9
D 12 79 3947647 22419.44 731 710 176.0
D 8 195 1649270 9364.17 731 710 176.0
D 1 52 1586102 9005.36 731 710 176.0

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