ASTROSAT CZTI

Data Quality Report

Orbit 41368

Creation date: 2024-06-27T22:28:12.618615
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/AS1A12_035T01_9000005660_41368cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41368cztM0_level2_quad_clean.evt
Size (bytes)403,830,72086,647,680
Size385.1 MB 82.6 MB
Events in quadrant A2,901,326601,120
Events in quadrant B2,745,974604,467
Events in quadrant C3,015,382554,779
Events in quadrant D5,858,563478,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119653
B0119092
C0124982
D0212122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491150.273174%
B5491631.147332%
C54912143.897286%
D549181314.806046%

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 7104 5492 3 3 0.04% 0.05%
B 7104 5492 26 26 0.37% 0.47%
C 7104 5492 207 207 2.91% 3.77%
D 7104 5492 870 870 12.25% 15.84%

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 535061 4292.87 602 589 124.5
A 12 189 24490 191.97 602 589 124.5
A 13 248 9312 70.06 602 589 124.5
B 0 186 143170 1217.82 596 579 117.1
B 0 190 87602 743.23 596 579 117.1
B 0 229 78460 665.16 596 579 117.1
C 0 10 543992 4061.5 569 571 133.8
C 15 214 229522 1711.17 569 571 133.8
C 15 111 17472 126.32 569 571 133.8
D 1 52 2980469 21709.78 560 541 137.3
D 5 222 416738 3032.14 560 541 137.3
D 13 249 154453 1121.3 560 541 137.3

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