ASTROSAT CZTI

Data Quality Report

Orbit 06817

Creation date: 2024-06-27T15:12:00.053758
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/AS1G06_086T02_9000000936_06817cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06817cztM0_level2_quad_clean.evt
Size (bytes)512,593,92072,907,200
Size488.8 MB 69.5 MB
Events in quadrant A3,506,245446,089
Events in quadrant B3,803,709450,443
Events in quadrant C3,548,602440,850
Events in quadrant D4,228,038420,432

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145442
B0154841
C0147181
D0168491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64491562.418980%
B64491852.868662%
C6449961.488603%
D64492183.380369%

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 7759 6450 33 33 0.43% 0.51%
B 7759 6450 41 41 0.53% 0.64%
C 7759 6450 26 26 0.34% 0.40%
D 7759 6450 127 127 1.64% 1.97%

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 14 111 117971 684.71 842 826 171.1
A 8 15 113103 656.26 842 826 171.1
A 8 4 15222 84.14 842 826 171.1
B 0 228 244107 1514.63 847 829 160.6
B 4 81 153709 951.82 847 829 160.6
B 15 204 81053 499.47 847 829 160.6
C 12 16 346222 1845.24 811 818 187.2
C 9 247 33174 172.85 811 818 187.2
C 13 61 6362 29.62 811 818 187.2
D 14 34 635930 3233.27 801 777 196.4
D 8 195 409871 2082.51 801 777 196.4
D 2 216 70485 354.85 801 777 196.4

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