ASTROSAT CZTI

Data Quality Report

Orbit 08688

Creation date: 2024-06-27T15:35:56.039847
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/AS1G07_024T01_9000001206_08688cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08688cztM0_level2_quad_clean.evt
Size (bytes)510,350,400130,003,200
Size486.7 MB 124.0 MB
Events in quadrant A3,200,193852,703
Events in quadrant B3,723,441878,640
Events in quadrant C4,065,273864,012
Events in quadrant D3,966,611829,393

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150932
B0162001
C0175991
D0173971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73701051.424695%
B73701902.578019%
C73702793.785617%
D73702843.853460%

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 7500 7372 4 4 0.05% 0.05%
B 7500 7373 33 33 0.44% 0.45%
C 7500 7373 158 158 2.11% 2.14%
D 7500 7373 203 203 2.71% 2.75%

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 20566 117.83 820 800 167.8
A 13 251 15218 85.95 820 800 167.8
A 5 16 9204 50.1 820 800 167.8
B 10 16 187343 1175.76 834 813 158.6
B 4 48 130888 819.91 834 813 158.6
B 0 219 103091 644.69 834 813 158.6
C 4 254 895120 4788.89 805 805 186.7
C 1 16 24530 127.04 805 805 186.7
C 13 61 6161 28.68 805 805 186.7
D 2 152 682630 3514.2 797 772 194.0
D 7 71 100521 514.09 797 772 194.0
D 2 14 73323 373.92 797 772 194.0

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