ASTROSAT CZTI

Data Quality Report

Orbit 54021

Creation date: 2025-09-23T00:11:53.401264
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/AS1A14_041T01_9000006510_54021cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54021cztM0_level2_quad_clean.evt
Size (bytes)1,198,146,240177,160,320
Size1.1 GB 169.0 MB
Events in quadrant A6,620,0241,296,504
Events in quadrant B7,457,9231,387,308
Events in quadrant C7,141,1351,203,481
Events in quadrant D22,090,667549,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296345
B0319102
C0312832
D0749146

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134272211.645937%
B134304463.320923%
C134303212.390171%
D13429736654.851441%

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 25170 13430 82 82 0.33% 0.61%
B 25171 13433 222 222 0.88% 1.65%
C 25171 13433 212 212 0.84% 1.58%
D 25170 13430 4978 4978 19.78% 37.07%

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 15 174 527648 1493.18 1426 1388 352.4
A 12 115 164433 462.61 1426 1388 352.4
A 0 8 152640 429.15 1426 1388 352.4
B 0 213 734363 2484.06 1406 1359 295.1
B 0 155 345940 1167.74 1406 1359 295.1
B 5 185 145457 488.33 1406 1359 295.1
C 14 80 487438 1290.27 1382 1366 376.7
C 12 250 277933 734.14 1382 1366 376.7
C 3 233 213141 562.15 1382 1366 376.7
D 8 176 17713924 73880.34 848 810 239.8
D 2 172 120676 499.95 848 810 239.8
D 3 144 98392 407.01 848 810 239.8

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