ASTROSAT CZTI

Data Quality Report

Orbit 10811

Creation date: 2024-06-27T16:04:43.511079
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/AS1G07_053T01_9000001566_10811cztM0_level2.evt modeM0/AS1G07_053T01_9000001566_10811cztM0_level2_quad_clean.evt
Size (bytes)237,934,08034,499,520
Size226.9 MB 32.9 MB
Events in quadrant A1,684,115229,903
Events in quadrant B1,586,602239,967
Events in quadrant C1,064,678233,752
Events in quadrant D2,733,024195,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063912
B060551
C043811
D095511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199822311.161161%
B19981969.809810%
C1998512.552553%
D199857528.778779%

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 3218 1998 101 101 3.14% 5.06%
B 3218 1999 76 76 2.36% 3.80%
C 3218 1999 0 0 0.00% 0.00%
D 3218 1999 434 434 13.49% 21.71%

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 8 5 581107 9864.85 279 273 58.9
A 4 2 20460 342.85 279 273 58.9
A 15 174 4674 74.75 279 273 58.9
B 4 239 256739 4780.45 273 266 53.7
B 15 204 186934 3479.34 273 266 53.7
B 0 219 50753 941.04 273 266 53.7
C 14 234 3581 51.78 271 272 63.9
C 13 61 2098 28.58 271 272 63.9
C 8 222 1135 13.51 271 272 63.9
D 4 95 959587 15590.98 252 245 61.5
D 10 199 219682 3566.23 252 245 61.5
D 10 253 204159 3313.96 252 245 61.5

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