ASTROSAT CZTI

Data Quality Report

Orbit 41884

Creation date: 2024-06-27T22:34:01.171282
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/AS1T05_124T01_9000005712_41884cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41884cztM0_level2_quad_clean.evt
Size (bytes)276,704,64050,993,280
Size263.9 MB 48.6 MB
Events in quadrant A1,741,995362,530
Events in quadrant B1,492,925365,938
Events in quadrant C1,887,462324,619
Events in quadrant D4,863,973258,459

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070811
B066461
C076061
D0167441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328080.243902%
B328010.030488%
C32801434.359756%
D328087026.524390%

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 3280 3280 3 3 0.09% 0.09%
B 3280 3280 1 1 0.03% 0.03%
C 3280 3280 141 141 4.30% 4.30%
D 3280 3280 852 852 25.98% 25.98%

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 314296 4155.53 361 353 75.5
A 14 24 19967 259.62 361 353 75.5
A 2 79 4983 61.29 361 353 75.5
B 0 156 65852 927.59 355 346 70.6
B 0 245 15817 219.07 355 346 70.6
B 12 111 9038 123.08 355 346 70.6
C 0 10 430555 5387.66 336 338 79.9
C 15 214 127496 1592.41 336 338 79.9
C 0 15 9197 110.94 336 338 79.9
D 12 79 3103919 39022.13 318 309 79.5
D 13 249 333226 4185.81 318 309 79.5
D 5 222 70464 882.07 318 309 79.5

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