ASTROSAT CZTI

Data Quality Report

Orbit 18507

Creation date: 2024-06-27T17:50:43.568359
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_075T08_9000002744_18507cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18507cztM0_level2_quad_clean.evt
Size (bytes)566,280,00096,030,720
Size540.0 MB 91.6 MB
Events in quadrant A4,312,187576,912
Events in quadrant B4,206,843592,943
Events in quadrant C4,012,629574,360
Events in quadrant D4,033,331565,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182871
B0179351
C0174571
D0179621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86131561.811216%
B86141141.323427%
C86141261.462735%
D8614871.009984%

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 9103 8613 48 48 0.53% 0.56%
B 9104 8614 8 8 0.09% 0.09%
C 9104 8614 0 0 0.00% 0.00%
D 9104 8614 8 8 0.09% 0.09%

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 0 13 281765 1354.79 1020 997 207.2
A 15 174 80142 381.9 1020 997 207.2
A 13 254 12810 57.0 1020 997 207.2
B 10 245 72264 359.97 1025 999 198.0
B 7 220 65424 325.42 1025 999 198.0
B 15 222 28933 141.1 1025 999 198.0
C 14 238 152859 652.33 985 991 232.8
C 9 54 11235 44.0 985 991 232.8
C 13 61 7038 25.97 985 991 232.8
D 13 168 73504 297.23 999 968 244.0
D 7 38 62067 250.36 999 968 244.0
D 7 238 58634 236.3 999 968 244.0

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