ASTROSAT CZTI

Data Quality Report

Orbit 09004

Creation date: 2024-06-27T15:40:00.743675
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/AS1C02_037T01_9000001252_09004cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09004cztM0_level2_quad_clean.evt
Size (bytes)505,350,720102,741,120
Size481.9 MB 98.0 MB
Events in quadrant A4,009,347666,924
Events in quadrant B3,819,122670,758
Events in quadrant C3,195,518659,702
Events in quadrant D3,817,503638,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162092
B0155581
C0140781
D0157141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68301472.152269%
B68301452.122987%
C6830971.420205%
D68301542.254758%

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 7860 6831 5 5 0.06% 0.07%
B 7860 6831 14 14 0.18% 0.20%
C 7860 6831 0 0 0.00% 0.00%
D 7860 6831 35 35 0.45% 0.51%

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 8 5 651980 3766.54 849 831 172.9
A 1 162 27079 151.83 849 831 172.9
A 5 16 23879 133.32 849 831 172.9
B 0 230 276943 1709.08 845 827 161.6
B 0 214 92969 570.33 845 827 161.6
B 10 16 80865 495.41 845 827 161.6
C 13 61 6358 29.05 818 822 190.6
C 14 238 3720 15.21 818 822 190.6
C 3 202 2047 6.43 818 822 190.6
D 7 71 271847 1317.92 829 803 205.7
D 6 225 240684 1166.39 829 803 205.7
D 1 52 51712 247.54 829 803 205.7

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