ASTROSAT CZTI

Data Quality Report

Orbit 15829

Creation date: 2024-06-27T17:14:05.388277
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/AS1A04_143T01_9000002344_15829cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15829cztM0_level2_quad_clean.evt
Size (bytes)2,000,468,160331,983,360
Size1.9 GB 316.6 MB
Events in quadrant A14,086,3122,043,232
Events in quadrant B15,459,4592,075,408
Events in quadrant C14,154,7331,983,327
Events in quadrant D14,918,1781,952,274

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05920
B05920
C05920
D05920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613075
B0644224
C0604274
D0635704

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290837812.685418%
B290838612.960492%
C290837152.458481%
D290837032.417220%

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 31564 29087 78 78 0.25% 0.27%
B 31564 29087 125 125 0.40% 0.43%
C 31564 29088 12 12 0.04% 0.04%
D 31564 29088 126 126 0.40% 0.43%

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 15 239 511580 715.59 3515 3436 710.1
A 9 143 39025 50.12 3515 3436 710.1
A 0 226 31224 39.13 3515 3436 710.1
B 10 245 864293 1279.45 3514 3421 672.8
B 4 173 214635 313.91 3514 3421 672.8
B 0 189 198604 290.09 3514 3421 672.8
C 14 238 514167 640.2 3388 3406 797.8
C 3 233 177921 218.74 3388 3406 797.8
C 0 207 135700 165.82 3388 3406 797.8
D 7 223 612331 719.85 3448 3350 846.0
D 12 218 473032 555.19 3448 3350 846.0
D 1 52 452440 530.85 3448 3350 846.0

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