ASTROSAT CZTI

Data Quality Report

Orbit 21731

Creation date: 2024-06-27T18:32:07.004565
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/AS1A07_027T16_9000003222_21731cztM0_level2.evt modeM0/AS1A07_027T16_9000003222_21731cztM0_level2_quad_clean.evt
Size (bytes)167,760,00012,438,720
Size160.0 MB 11.9 MB
Events in quadrant A1,484,63354,010
Events in quadrant B1,138,32858,747
Events in quadrant C1,137,81056,539
Events in quadrant D1,176,04455,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057911
B046911
C046711
D049171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207235917.326255%
B207222110.666023%
C207221210.231660%
D20721989.555985%

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 2237 2073 133 133 5.95% 6.42%
B 2237 2073 2 2 0.09% 0.10%
C 2237 2073 0 0 0.00% 0.00%
D 2237 2073 16 16 0.72% 0.77%

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 15 236 399652 6701.66 280 272 59.6
A 5 16 4482 70.64 280 272 59.6
A 13 254 2816 42.69 280 272 59.6
B 3 64 20638 348.15 282 273 58.5
B 12 111 7460 122.87 282 273 58.5
B 0 189 6977 114.61 282 273 58.5
C 14 238 40747 576.92 281 281 70.1
C 13 61 2000 24.51 281 281 70.1
C 2 254 658 5.37 281 281 70.1
D 12 235 49739 683.56 287 277 72.4
D 2 136 39884 547.36 287 277 72.4
D 2 234 5974 78.73 287 277 72.4

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