ASTROSAT CZTI

Data Quality Report

Orbit 21829

Creation date: 2024-06-27T18:32:45.659138
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/AS1A07_004T01_9000003230_21829cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21829cztM0_level2_quad_clean.evt
Size (bytes)450,270,72081,630,720
Size429.4 MB 77.8 MB
Events in quadrant A3,121,447511,946
Events in quadrant B3,502,971527,367
Events in quadrant C3,172,801506,446
Events in quadrant D3,404,134479,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132312
B0143142
C0132382
D0143492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6403280.437295%
B64031071.671092%
C6403610.952678%
D6403550.858972%

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 7623 6404 0 0 0.00% 0.00%
B 7623 6404 52 52 0.68% 0.81%
C 7623 6404 0 0 0.00% 0.00%
D 7623 6404 30 30 0.39% 0.47%

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 12280 71.09 809 794 161.6
A 0 226 6979 38.28 809 794 161.6
A 3 137 6554 35.65 809 794 161.6
B 3 64 232084 1510.77 815 797 153.1
B 0 230 27781 176.26 815 797 153.1
B 12 111 17787 110.98 815 797 153.1
C 14 238 123285 678.3 779 784 180.6
C 0 10 7061 34.76 779 784 180.6
C 13 61 5512 26.18 779 784 180.6
D 1 52 210675 1117.15 778 755 187.9
D 5 32 65591 345.04 778 755 187.9
D 12 238 42368 221.46 778 755 187.9

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