ASTROSAT CZTI

Data Quality Report

Orbit 21075

Creation date: 2024-06-27T18:23:10.975681
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_075T05_9000003116_21075cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21075cztM0_level2_quad_clean.evt
Size (bytes)484,902,72079,511,040
Size462.4 MB 75.8 MB
Events in quadrant A3,226,603501,601
Events in quadrant B3,544,428514,699
Events in quadrant C3,269,487484,632
Events in quadrant D4,208,400458,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134662
B0143692
C0135872
D0166732

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439400.621214%
B6439791.226899%
C6439661.025004%
D64391752.717813%

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 7794 6440 0 0 0.00% 0.00%
B 7794 6439 8 8 0.10% 0.12%
C 7794 6440 0 0 0.00% 0.00%
D 7794 6440 107 107 1.37% 1.66%

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 9425 51.48 834 819 167.2
A 0 226 7135 37.78 834 819 167.2
A 3 137 6347 33.07 834 819 167.2
B 0 219 78724 503.7 842 824 154.7
B 0 230 47480 301.67 842 824 154.7
B 3 64 41174 260.9 842 824 154.7
C 14 238 129007 689.62 805 811 185.9
C 13 61 5677 26.18 805 811 185.9
C 14 111 1920 5.97 805 811 185.9
D 1 52 568697 3001.92 794 772 189.2
D 13 153 176837 930.64 794 772 189.2
D 1 239 148744 782.15 794 772 189.2

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