ASTROSAT CZTI

Data Quality Report

Orbit 04947

Creation date: 2024-06-27T14:49:11.358405
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/AS1G05_157T01_9000000626_04947cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04947cztM0_level2_quad_clean.evt
Size (bytes)475,191,36081,224,640
Size453.2 MB 77.5 MB
Events in quadrant A3,244,409507,494
Events in quadrant B3,387,911506,901
Events in quadrant C3,051,148511,796
Events in quadrant D4,263,005477,000

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139813
B0142802
C0135614
D0170342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65451542.352941%
B65451772.704354%
C65441362.078240%
D65453815.821238%

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 8635 6545 15 15 0.17% 0.23%
B 8635 6545 34 34 0.39% 0.52%
C 8635 6545 0 0 0.00% 0.00%
D 8635 6545 240 240 2.78% 3.67%

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 31 120557 740.21 799 782 161.8
A 0 50 31012 186.82 799 782 161.8
A 13 251 11742 67.73 799 782 161.8
B 10 16 171105 1114.65 805 787 152.8
B 15 204 38198 244.84 805 787 152.8
B 4 48 23448 148.31 805 787 152.8
C 13 61 6313 30.64 780 782 180.5
C 1 16 4829 22.42 780 782 180.5
C 3 202 2014 6.82 780 782 180.5
D 2 33 690804 3679.17 768 746 187.6
D 2 234 253633 1348.31 768 746 187.6
D 7 67 127466 675.63 768 746 187.6

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