ASTROSAT CZTI

Data Quality Report

Orbit 19582

Creation date: 2024-06-27T18:04:27.614741
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/AS1T03_037T01_9000002912_19582cztM0_level2.evt modeM0/AS1T03_037T01_9000002912_19582cztM0_level2_quad_clean.evt
Size (bytes)512,164,800111,602,880
Size488.4 MB 106.4 MB
Events in quadrant A3,168,726737,165
Events in quadrant B3,310,928760,119
Events in quadrant C3,382,996732,448
Events in quadrant D5,208,624698,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134372
B0139002
C0139622
D0197902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472130.200865%
B6472440.679852%
C6472751.158838%
D64724426.829419%

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 7717 6473 0 0 0.00% 0.00%
B 7717 6473 2 2 0.03% 0.03%
C 7717 6472 1 1 0.01% 0.02%
D 7717 6473 358 358 4.64% 5.53%

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 9238 51.53 822 806 163.6
A 0 226 7079 38.34 822 806 163.6
A 3 137 6159 32.72 822 806 163.6
B 0 198 27408 173.13 828 809 153.6
B 12 111 17702 109.96 828 809 153.6
B 11 111 15543 95.9 828 809 153.6
C 14 238 127934 682.01 813 823 186.4
C 3 233 41428 217.86 813 823 186.4
C 5 112 26633 138.48 813 823 186.4
D 1 52 1618743 8422.9 797 776 192.1
D 12 218 219413 1138.19 797 776 192.1
D 7 238 173470 899.02 797 776 192.1

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