ASTROSAT CZTI

Data Quality Report

Orbit 24537

Creation date: 2024-06-27T19:07:02.736985
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/AS1T03_183T01_9000003606_24537cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24537cztM0_level2_quad_clean.evt
Size (bytes)477,400,320121,521,600
Size455.3 MB 115.9 MB
Events in quadrant A3,111,839827,183
Events in quadrant B3,523,433840,974
Events in quadrant C3,161,497787,387
Events in quadrant D4,212,377763,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135992
B0146506
C0137122
D0171252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615190.287226%
B6614580.876928%
C6614580.876928%
D6614620.937406%

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 7555 6616 0 0 0.00% 0.00%
B 7554 6615 18 18 0.24% 0.27%
C 7554 6615 11 11 0.15% 0.17%
D 7554 6615 35 35 0.46% 0.53%

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 13 254 10377 59.6 803 790 160.9
A 14 111 7844 43.85 803 790 160.9
A 3 137 7256 40.2 803 790 160.9
B 3 64 358525 2369.76 803 786 151.0
B 12 111 18337 116.26 803 786 151.0
B 11 111 16085 101.34 803 786 151.0
C 14 238 124071 692.11 764 770 178.2
C 2 16 55953 309.75 764 770 178.2
C 13 61 5327 25.58 764 770 178.2
D 1 52 1005463 5395.84 765 742 186.2
D 8 195 183349 980.69 765 742 186.2
D 12 218 66485 353.07 765 742 186.2

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