ASTROSAT CZTI

Data Quality Report

Orbit 15514

Creation date: 2024-06-27T17:09:40.055382
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/AS1T02_085T01_9000002296_15514cztM0_level2.evt modeM0/AS1T02_085T01_9000002296_15514cztM0_level2_quad_clean.evt
Size (bytes)848,352,960163,350,720
Size809.1 MB 155.8 MB
Events in quadrant A6,760,6341,039,979
Events in quadrant B5,695,9871,066,184
Events in quadrant C6,302,8121,040,599
Events in quadrant D6,165,4311,015,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273743
B0240142
C0258052
D0258262

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113434283.773252%
B11343860.758177%
C113431311.154897%
D113431881.657410%

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 13669 11346 234 234 1.71% 2.06%
B 13669 11346 9 9 0.07% 0.08%
C 13669 11346 0 0 0.00% 0.00%
D 13669 11345 111 111 0.81% 0.98%

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 14 238 963297 3465.67 1387 1358 277.6
A 0 253 218374 781.86 1387 1358 277.6
A 14 237 193473 692.15 1387 1358 277.6
B 0 189 66628 246.53 1402 1362 264.7
B 0 197 51349 188.81 1402 1362 264.7
B 0 229 34528 125.28 1402 1362 264.7
C 3 233 739452 2342.58 1367 1378 315.1
C 14 238 210280 663.04 1367 1378 315.1
C 13 61 9623 26.17 1367 1378 315.1
D 1 52 319280 943.13 1391 1353 337.1
D 5 222 295027 871.18 1391 1353 337.1
D 12 221 88839 259.53 1391 1353 337.1

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