ASTROSAT CZTI

Data Quality Report

Orbit 39220

Creation date: 2024-06-27T22:01:56.208977
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_054T04_9000005446_39220cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39220cztM0_level2_quad_clean.evt
Size (bytes)625,239,36089,366,400
Size596.3 MB 85.2 MB
Events in quadrant A3,202,072699,034
Events in quadrant B3,085,714695,613
Events in quadrant C3,075,522666,589
Events in quadrant D13,300,600214,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134203
B0134582
C0131712
D0437322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6174370.599287%
B6174991.603499%
C617450.080985%
D6174444071.914480%

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 8951 6176 23 23 0.26% 0.37%
B 8951 6176 54 54 0.60% 0.87%
C 8951 6176 3 3 0.03% 0.05%
D 8951 6176 3433 3433 38.35% 55.59%

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 485058 3514.11 681 665 137.8
A 13 248 80079 576.12 681 665 137.8
A 13 254 8291 55.32 681 665 137.8
B 5 172 188170 1430.18 669 650 131.1
B 5 255 174316 1324.51 669 650 131.1
B 0 190 61882 467.0 669 650 131.1
C 15 214 255711 1657.77 658 661 153.9
C 3 233 229996 1490.63 658 661 153.9
C 0 10 11354 69.5 658 661 153.9
D 12 235 9071613 89436.08 415 403 101.4
D 1 47 1818146 17921.73 415 403 101.4
D 2 249 428701 4222.73 415 403 101.4

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