ASTROSAT CZTI

Data Quality Report

Orbit 15497

Creation date: 2024-06-27T17:09:27.302870
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_078T01_9000002294_15497cztM0_level2.evt modeM0/AS1T02_078T01_9000002294_15497cztM0_level2_quad_clean.evt
Size (bytes)176,955,84023,186,880
Size168.8 MB 22.1 MB
Events in quadrant A1,183,341134,887
Events in quadrant B1,259,315135,386
Events in quadrant C1,278,980131,170
Events in quadrant D1,475,276130,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049352
B051441
C051761
D058901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2358251.060221%
B2358311.314673%
C2358522.205259%
D23581014.283291%

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 3419 2360 1 1 0.03% 0.04%
B 3419 2359 2 2 0.06% 0.08%
C 3419 2359 0 0 0.00% 0.00%
D 3419 2360 63 63 1.84% 2.67%

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 7903 121.97 301 295 62.4
A 0 253 5852 89.09 301 295 62.4
A 14 237 4634 69.56 301 295 62.4
B 10 245 19188 318.82 304 297 59.3
B 0 197 17835 295.98 304 297 59.3
B 4 142 15986 264.78 304 297 59.3
C 3 233 90218 1312.67 291 292 68.5
C 14 238 45970 666.77 291 292 68.5
C 9 54 3928 53.08 291 292 68.5
D 7 223 170303 2371.46 290 281 71.7
D 1 52 118580 1650.03 290 281 71.7
D 7 38 71616 994.98 290 281 71.7

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