ASTROSAT CZTI

Data Quality Report

Orbit 25898

Creation date: 2024-06-27T19:22:36.751402
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_068T01_9000003756_25898cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25898cztM0_level2_quad_clean.evt
Size (bytes)1,348,945,920204,134,400
Size1.3 GB 194.7 MB
Events in quadrant A11,261,2931,310,711
Events in quadrant B8,285,2501,342,480
Events in quadrant C7,694,2601,256,917
Events in quadrant D12,563,8881,199,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441160
B0341880
C0329020
D0480450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155404723.037323%
B155412041.312657%
C155422361.518466%
D15542166210.693604%

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 18941 15544 150 150 0.79% 0.97%
B 18941 15544 4 4 0.02% 0.03%
C 18942 15545 1 1 0.01% 0.01%
D 18942 15545 1269 1269 6.70% 8.16%

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 13 3691537 9466.13 1961 1927 389.8
A 13 254 25776 61.19 1961 1927 389.8
A 3 137 17927 41.05 1961 1927 389.8
B 10 245 377311 1018.38 1951 1906 368.6
B 0 219 179054 480.56 1951 1906 368.6
B 12 111 44712 116.12 1951 1906 368.6
C 14 238 301839 696.13 1855 1867 430.9
C 3 233 160081 367.16 1855 1867 430.9
C 13 61 12675 25.08 1855 1867 430.9
D 1 52 5272835 12278.72 1802 1762 429.3
D 5 223 372303 863.16 1802 1762 429.3
D 2 234 62256 140.92 1802 1762 429.3

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