ASTROSAT CZTI

Data Quality Report

Orbit 40615

Creation date: 2024-06-27T22:18:16.201720
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_011T59_9000005552_40615cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40615cztM0_level2_quad_clean.evt
Size (bytes)221,371,20059,054,400
Size211.1 MB 56.3 MB
Events in quadrant A1,898,121395,707
Events in quadrant B1,901,686409,889
Events in quadrant C1,730,225397,076
Events in quadrant D2,379,322328,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079901
B081161
C074611
D096734

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3639100.274801%
B3639210.577082%
C363990.247321%
D363843511.957119%

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 5282 3640 2 2 0.04% 0.05%
B 5282 3640 14 14 0.27% 0.38%
C 5282 3640 9 9 0.17% 0.25%
D 5281 3639 141 141 2.67% 3.87%

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 293920 3529.37 395 387 83.2
A 13 252 35449 421.58 395 387 83.2
A 2 79 24272 287.19 395 387 83.2
B 0 229 125996 1624.38 392 381 77.3
B 3 112 95395 1228.66 392 381 77.3
B 0 190 70382 905.21 392 381 77.3
C 15 214 154656 1704.86 385 387 90.5
C 14 254 35481 387.83 385 387 90.5
C 0 10 13904 149.38 385 387 90.5
D 12 227 664938 7377.63 362 352 90.1
D 12 191 107055 1184.52 362 352 90.1
D 13 249 73701 814.25 362 352 90.1

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