ASTROSAT CZTI

Data Quality Report

Orbit 21538

Creation date: 2024-06-27T18:29:18.311292
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_138T03_9000003178_21538cztM0_level2.evt modeM0/AS1T03_138T03_9000003178_21538cztM0_level2_quad_clean.evt
Size (bytes)303,396,48050,244,480
Size289.3 MB 47.9 MB
Events in quadrant A2,172,351317,124
Events in quadrant B2,231,428327,297
Events in quadrant C2,178,235299,284
Events in quadrant D2,324,293285,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087611
B089801
C087761
D094561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4138110.265829%
B4138170.410826%
C4138270.652489%
D4138641.546641%

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 4138 4138 0 0 0.00% 0.00%
B 4138 4138 0 0 0.00% 0.00%
C 4138 4138 1 1 0.02% 0.02%
D 4138 4138 57 57 1.38% 1.38%

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 13 254 5852 47.15 563 554 112.4
A 0 226 4819 37.96 563 554 112.4
A 3 137 4395 34.19 563 554 112.4
B 0 230 34694 326.82 559 547 104.5
B 12 111 12140 110.96 559 547 104.5
B 11 111 10498 95.24 559 547 104.5
C 14 238 85583 698.96 526 532 121.7
C 0 239 35800 289.84 526 532 121.7
C 3 233 3915 27.8 526 532 121.7
D 9 68 121303 959.31 525 511 125.9
D 1 52 108136 854.74 525 511 125.9
D 14 35 88639 699.9 525 511 125.9

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