ASTROSAT CZTI

Data Quality Report

Orbit 14686

Creation date: 2024-06-27T16:58:28.413735
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_011T07_9000002172_14686cztM0_level2.evt modeM0/AS1A04_011T07_9000002172_14686cztM0_level2_quad_clean.evt
Size (bytes)177,494,40022,608,000
Size169.3 MB 21.6 MB
Events in quadrant A1,214,488131,428
Events in quadrant B1,207,099129,824
Events in quadrant C1,374,865129,396
Events in quadrant D1,420,410127,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049272
B049161
C056201
D057361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2300612.652174%
B2300723.130435%
C2300632.739130%
D23001456.304348%

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 3251 2301 0 0 0.00% 0.00%
B 3251 2301 0 0 0.00% 0.00%
C 3251 2301 1 1 0.03% 0.04%
D 3251 2301 77 77 2.37% 3.35%

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 12 189 23632 366.03 305 298 63.7
A 11 29 9125 138.46 305 298 63.7
A 8 15 5519 81.9 305 298 63.7
B 0 214 8885 140.34 306 298 61.2
B 12 111 7212 113.0 306 298 61.2
B 11 111 6003 93.24 306 298 61.2
C 3 233 206065 2906.09 299 301 70.8
C 14 234 3150 40.24 299 301 70.8
C 13 61 2148 26.09 299 301 70.8
D 2 14 289927 3986.15 291 284 72.7
D 12 110 14999 202.51 291 284 72.7
D 2 234 7551 100.01 291 284 72.7

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