ASTROSAT CZTI

Data Quality Report

Orbit 04336

Creation date: 2024-06-27T14:40:32.229705
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/AS1G05_219T01_9000000540_04336cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04336cztM0_level2_quad_clean.evt
Size (bytes)2,297,779,200160,182,720
Size2.1 GB 152.8 MB
Events in quadrant A8,341,9161,064,389
Events in quadrant B42,158,805460,688
Events in quadrant C8,106,1691,045,839
Events in quadrant D9,742,8721,008,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03742
B03742
C03742
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0211
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038062157
B01403232797
C037797154
D042840198

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184631310.709527%
B182111476481.071880%
C18460920.498375%
D184492301.246680%

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 20420 18531 6 6 0.03% 0.03%
B 20418 18211 14267 14267 69.87% 78.34%
C 20420 18534 1 1 0.00% 0.01%
D 20420 18527 114 114 0.56% 0.62%

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 0 50 62321 139.15 2116 2070 433.0
A 13 251 51997 115.31 2116 2070 433.0
A 15 234 37277 81.31 2116 2070 433.0
B 3 0 37180380 169994.29 1156 1131 218.7
B 15 204 176636 802.46 1156 1131 218.7
B 4 48 95294 430.54 1156 1131 218.7
C 9 16 75162 153.17 2044 2053 477.3
C 9 247 17249 31.84 2044 2053 477.3
C 13 61 16938 31.19 2044 2053 477.3
D 13 53 830264 1685.13 2026 1967 491.5
D 4 95 390459 790.37 2026 1967 491.5
D 2 136 198998 400.85 2026 1967 491.5

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