ASTROSAT CZTI

Data Quality Report

Orbit 24810

Creation date: 2024-06-27T19:10:08.469331
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_197T01_9000003626_24810cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24810cztM0_level2_quad_clean.evt
Size (bytes)777,496,320135,967,680
Size741.5 MB 129.7 MB
Events in quadrant A5,467,750872,016
Events in quadrant B5,896,114871,015
Events in quadrant C5,474,894827,997
Events in quadrant D5,996,887819,323

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220672
B0234652
C0223002
D0241722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105041191.132902%
B105042562.437167%
C105041611.532749%
D105041181.123382%

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 13064 10506 0 0 0.00% 0.00%
B 13064 10506 72 72 0.55% 0.69%
C 13064 10506 0 0 0.00% 0.00%
D 13064 10506 42 42 0.32% 0.40%

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 15708 51.44 1419 1393 278.3
A 3 137 12286 39.14 1419 1393 278.3
A 0 226 12207 38.86 1419 1393 278.3
B 3 64 403175 1556.84 1385 1355 258.1
B 12 111 31388 116.36 1385 1355 258.1
B 4 80 29723 109.91 1385 1355 258.1
C 14 238 216441 709.08 1325 1333 303.4
C 10 218 42661 136.23 1325 1333 303.4
C 2 16 38955 124.02 1325 1333 303.4
D 8 195 621437 1919.55 1360 1322 323.1
D 1 52 230641 709.85 1360 1322 323.1
D 2 234 37367 111.58 1360 1322 323.1

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