ASTROSAT CZTI

Data Quality Report

Orbit 15873

Creation date: 2024-06-27T17:14:36.842968
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_15873cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15873cztM0_level2_quad_clean.evt
Size (bytes)1,864,589,760292,135,680
Size1.7 GB 278.6 MB
Events in quadrant A14,474,4451,768,148
Events in quadrant B13,814,2511,813,836
Events in quadrant C13,709,3931,714,030
Events in quadrant D12,665,4251,713,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0603236
B0580695
C0572875
D0559505

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A267297272.719892%
B267296242.334543%
C267297662.865801%
D267294331.619963%

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 37782 26736 120 120 0.32% 0.45%
B 37782 26735 41 41 0.11% 0.15%
C 37782 26736 134 134 0.35% 0.50%
D 37782 26737 24 24 0.06% 0.09%

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 2032546 3115.8 3228 3152 651.3
A 0 226 28740 39.29 3228 3152 651.3
A 9 143 27597 37.53 3228 3152 651.3
B 5 65 295471 472.7 3238 3152 618.4
B 3 64 242794 387.52 3238 3152 618.4
B 4 173 127532 201.13 3238 3152 618.4
C 14 238 471924 649.55 3100 3124 721.7
C 10 22 398834 548.28 3100 3124 721.7
C 0 207 289341 396.57 3100 3124 721.7
D 1 52 260481 330.64 3181 3080 778.5
D 2 234 117334 146.76 3181 3080 778.5
D 12 110 106740 133.15 3181 3080 778.5

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