ASTROSAT CZTI

Data Quality Report

Orbit 29801

Creation date: 2024-06-27T20:07:51.748511
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_291T01_9000004278_29801cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29801cztM0_level2_quad_clean.evt
Size (bytes)2,396,157,120254,355,840
Size2.2 GB 242.6 MB
Events in quadrant A10,432,7941,737,898
Events in quadrant B17,545,8511,729,187
Events in quadrant C10,568,1251,654,426
Events in quadrant D32,590,9351,113,884

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0446634
B0670834
C0448334
D01111854

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A212772361.109179%
B212786753.172291%
C212784692.204155%
D21278905542.555691%

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 24852 21281 19 19 0.08% 0.09%
B 24853 21282 167 167 0.67% 0.78%
C 24853 21282 25 25 0.10% 0.12%
D 24853 21282 9012 9012 36.26% 42.35%

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 12 96 172166 322.42 2657 2601 525.9
A 13 254 45143 80.89 2657 2601 525.9
A 3 137 26165 44.81 2657 2601 525.9
B 6 159 6064393 12396.43 2605 2541 489.0
B 0 229 593627 1208.77 2605 2541 489.0
B 0 189 444986 904.8 2605 2541 489.0
C 14 238 458025 775.52 2526 2544 587.3
C 10 22 142479 238.26 2526 2544 587.3
C 14 254 69505 114.01 2526 2544 587.3
D 7 238 22595129 47071.59 2035 1983 480.0
D 8 195 1502430 3126.1 2035 1983 480.0
D 7 80 323612 670.1 2035 1983 480.0

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