ASTROSAT CZTI

Data Quality Report

Orbit 20190817_A06_009T03_9000003098_level2

Creation date: 2025-12-03T02:43:08.766886
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/AS1A06_009T03_9000003098cztM0_level2.fits modeM0/AS1A06_009T03_9000003098cztM0_level2_quad_clean.evt
Size (bytes)84,692,16093,156,480
Size80.8 MB 88.8 MB
Events in quadrant A514,358579,679
Events in quadrant B493,678572,459
Events in quadrant C505,890556,057
Events in quadrant D433,534495,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183100
B0203520
C0183640
D0220710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89031641.842076%
B89033143.526901%
C89032342.628328%
D89033423.841402%

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 9753 8903 0 0 0.00% 0.00%
B 9753 8903 0 0 0.00% 0.00%
C 9753 8903 0 0 0.00% 0.00%
D 9753 8903 0 0 0.00% 0.00%

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 0 29 477 10.0 133 125 35.2
A 7 110 436 8.84 133 125 35.2
A 9 19 394 7.64 133 125 35.2
B 2 9 353 8.04 130 123 28.6
B 3 17 333 7.34 130 123 28.6
B 4 227 332 7.3 130 123 28.6
C 12 241 360 6.5 133 124 36.3
C 7 111 353 6.31 133 124 36.3
C 12 250 332 5.73 133 124 36.3
D 7 3 348 6.85 123 112 34.4
D 6 231 324 6.15 123 112 34.4
D 1 31 305 5.6 123 112 34.4

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