ASTROSAT CZTI

Data Quality Report

Orbit 31492

Creation date: 2024-06-27T20:29:11.875679
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/AS1T04_028T01_9000004584_31492cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31492cztM0_level2_quad_clean.evt
Size (bytes)3,939,163,200540,984,960
Size3.7 GB 515.9 MB
Events in quadrant A22,295,0013,478,353
Events in quadrant B42,459,2613,346,312
Events in quadrant C23,326,7693,390,779
Events in quadrant D28,351,6693,243,808

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08682
B08682
C08682
D08684

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093307274
B0157550929
C095243219
D0111848249

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4262110432.447150%
B42570582313.678647%
C4263514943.504163%
D4263018364.306826%

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 56825 42681 235 235 0.41% 0.55%
B 56826 42601 4324 4324 7.61% 10.15%
C 56826 42688 346 346 0.61% 0.81%
D 56826 42679 1136 1136 2.00% 2.66%

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 0 13 1727797 1617.85 5330 5213 1064.7
A 13 254 72329 63.03 5330 5213 1064.7
A 3 137 54248 46.05 5330 5213 1064.7
B 6 159 10812020 11395.48 4969 4836 948.4
B 12 1 10652688 11227.47 4969 4836 948.4
B 5 172 436234 454.88 4969 4836 948.4
C 3 233 1115861 931.3 5091 5126 1192.7
C 0 10 1064511 888.25 5091 5126 1192.7
C 14 238 824316 686.85 5091 5126 1192.7
D 8 195 4126401 3405.62 5102 4972 1210.2
D 12 218 2273620 1874.63 5102 4972 1210.2
D 13 249 1222214 1005.83 5102 4972 1210.2

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