ASTROSAT CZTI

Data Quality Report

Orbit 34736

Creation date: 2024-06-27T21:04:30.199696
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/AS1A10_048T04_9000004984_34736cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34736cztM0_level2_quad_clean.evt
Size (bytes)893,459,520149,221,440
Size852.1 MB 142.3 MB
Events in quadrant A5,873,672944,489
Events in quadrant B5,680,208965,942
Events in quadrant C6,181,796941,137
Events in quadrant D8,560,780887,262

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248984
B0240303
C0251543
D0333983

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11277610.540924%
B11277680.602997%
C112771120.993172%
D112773352.970648%

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 15937 11280 29 29 0.18% 0.26%
B 15937 11280 35 35 0.22% 0.31%
C 15937 11280 96 96 0.60% 0.85%
D 15937 11280 290 290 1.82% 2.57%

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 15 169 508114 1912.34 1325 1302 265.0
A 15 174 105820 394.37 1325 1302 265.0
A 10 83 78613 291.71 1325 1302 265.0
B 5 172 248376 964.24 1325 1290 256.2
B 4 232 87091 334.83 1325 1290 256.2
B 5 255 54817 208.89 1325 1290 256.2
C 15 214 474284 1568.08 1297 1307 301.6
C 0 207 368429 1217.14 1297 1307 301.6
C 0 10 128484 421.64 1297 1307 301.6
D 8 195 1537868 4933.5 1281 1248 311.5
D 1 52 495759 1587.69 1281 1248 311.5
D 2 249 484120 1550.32 1281 1248 311.5

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