ASTROSAT CZTI

Data Quality Report

Orbit 00743

Creation date: 2024-06-27T14:02:21.772120
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/AS1P01_010T01_9000000108_00743cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00743cztM0_level2_quad_clean.evt
Size (bytes)1,325,940,48092,076,480
Size1.2 GB 87.8 MB
Events in quadrant A8,942,680583,422
Events in quadrant B9,547,414587,799
Events in quadrant C8,709,297583,178
Events in quadrant D12,484,224534,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316670
B0334350
C0309630
D0422720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71601231.717877%
B71601832.555866%
C7160710.991620%
D716190612.651864%

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 7160 7160 468 468 6.54% 6.54%
B 7160 7160 652 652 9.11% 9.11%
C 7160 7160 432 432 6.03% 6.03%
D 7161 7161 2247 2247 31.38% 31.38%

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 15 17 49442 83.79 2313 2331 562.2
A 15 233 13691 20.2 2313 2331 562.2
A 11 79 10984 15.39 2313 2331 562.2
B 5 191 354082 623.19 2384 2395 564.3
B 5 176 46648 78.42 2384 2395 564.3
B 8 38 42200 70.53 2384 2395 564.3
C 15 241 42098 64.14 2199 2271 620.9
C 3 111 39649 60.19 2199 2271 620.9
C 3 79 31188 46.57 2199 2271 620.9
D 7 207 1963560 2999.29 2083 2157 654.0
D 13 25 1400081 2137.64 2083 2157 654.0
D 10 85 833894 1271.85 2083 2157 654.0

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