ASTROSAT CZTI

Data Quality Report

Orbit 03988

Creation date: 2024-06-27T14:36:02.633495
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/AS1G05_247T01_9000000512_03988cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_03988cztM0_level2_quad_clean.evt
Size (bytes)912,939,840191,476,800
Size870.6 MB 182.6 MB
Events in quadrant A7,925,0031,224,791
Events in quadrant B6,722,9931,242,473
Events in quadrant C5,323,5811,254,116
Events in quadrant D6,821,9021,204,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325413
B0283062
C0254932
D0293812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126325384.259025%
B126322331.844522%
C12632990.783724%
D126323983.150728%

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 13792 12634 296 296 2.15% 2.34%
B 13792 12634 88 88 0.64% 0.70%
C 13792 12634 0 0 0.00% 0.00%
D 13792 12634 243 243 1.76% 1.92%

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 50 1155446 4108.78 1373 1339 280.9
A 4 48 1151239 4093.8 1373 1339 280.9
A 0 118 165947 586.03 1373 1339 280.9
B 14 167 635145 2363.31 1402 1365 268.2
B 3 0 323781 1202.26 1402 1365 268.2
B 15 204 163565 604.83 1402 1365 268.2
C 9 144 12664 36.05 1353 1355 313.7
C 13 61 11515 32.38 1353 1355 313.7
C 8 128 7280 18.88 1353 1355 313.7
D 2 63 783602 2419.45 1342 1301 323.3
D 10 246 319933 985.44 1342 1301 323.3
D 2 232 279419 860.15 1342 1301 323.3

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