ASTROSAT CZTI

Data Quality Report

Orbit 13504

Creation date: 2024-06-27T16:41:47.455954
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/AS1A04_103T01_9000001988_13504cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13504cztM0_level2_quad_clean.evt
Size (bytes)558,247,68066,588,480
Size532.4 MB 63.5 MB
Events in quadrant A3,524,705393,479
Events in quadrant B5,876,449392,762
Events in quadrant C3,535,277393,607
Events in quadrant D3,522,204375,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145073
B0218942
C0145522
D0148202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66091131.709790%
B660979412.013920%
C6609831.255863%
D6609981.482826%

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 7890 6610 0 0 0.00% 0.00%
B 7890 6610 513 513 6.50% 7.76%
C 7890 6610 0 0 0.00% 0.00%
D 7890 6610 9 9 0.11% 0.14%

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 14 238 28531 154.73 898 882 178.7
A 8 15 21558 115.71 898 882 178.7
A 1 162 15400 81.25 898 882 178.7
B 3 64 2419328 14891.04 875 858 162.4
B 0 230 18750 110.16 875 858 162.4
B 12 111 18431 108.2 875 858 162.4
C 3 233 130141 651.99 871 881 198.3
C 4 175 7586 33.82 871 881 198.3
C 13 61 6328 27.47 871 881 198.3
D 11 129 89457 432.54 866 843 204.9
D 14 35 50585 242.8 866 843 204.9
D 2 136 45144 216.24 866 843 204.9

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