ASTROSAT CZTI

Data Quality Report

Orbit 39909

Creation date: 2024-06-27T22:10:12.651121
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/AS1A12_068T03_9000005508_39909cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39909cztM0_level2_quad_clean.evt
Size (bytes)175,939,20047,237,760
Size167.8 MB 45.0 MB
Events in quadrant A1,560,138322,955
Events in quadrant B1,397,304333,624
Events in quadrant C1,337,481316,332
Events in quadrant D2,014,838272,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061172
B056593
C052921
D0774629

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2583301.161440%
B2581190.736149%
C258230.116189%
D25782158.339798%

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 4585 2583 15 15 0.33% 0.58%
B 4583 2581 9 9 0.20% 0.35%
C 4586 2583 2 2 0.04% 0.08%
D 4582 2580 191 191 4.17% 7.40%

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 10 83 233444 3562.98 316 310 65.4
A 6 10 57087 867.72 316 310 65.4
A 13 248 32205 487.45 316 310 65.4
B 4 171 65979 1071.37 313 306 61.3
B 5 255 36955 597.88 313 306 61.3
B 0 230 28300 456.68 313 306 61.3
C 15 214 116585 1594.32 309 311 72.9
C 0 10 8546 112.92 309 311 72.9
C 14 254 2655 32.14 309 311 72.9
D 13 249 497542 6781.68 297 289 73.3
D 2 250 93025 1264.76 297 289 73.3
D 12 227 86892 1181.12 297 289 73.3

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