ASTROSAT CZTI

Data Quality Report

Orbit 41339

Creation date: 2024-06-27T22:27:51.104092
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_105T01_9000005658_41339cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41339cztM0_level2_quad_clean.evt
Size (bytes)245,750,40065,842,560
Size234.4 MB 62.8 MB
Events in quadrant A2,003,015451,197
Events in quadrant B2,136,797451,280
Events in quadrant C2,221,637422,965
Events in quadrant D2,427,060390,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083992
B091501
C090961
D0101081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394370.177530%
B3943862.181080%
C39431413.575957%
D39431894.793305%

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 5556 3944 2 2 0.04% 0.05%
B 5556 3944 56 56 1.01% 1.42%
C 5556 3944 134 134 2.41% 3.40%
D 5556 3944 200 200 3.60% 5.07%

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 321112 3569.07 431 423 89.9
A 2 79 14933 161.49 431 423 89.9
A 3 137 4864 49.43 431 423 89.9
B 5 255 371293 4453.04 425 413 83.3
B 0 190 87548 1046.2 425 413 83.3
B 12 111 10308 118.81 425 413 83.3
C 0 10 409695 4209.98 407 408 97.2
C 15 214 164252 1685.32 407 408 97.2
C 12 249 26249 265.8 407 408 97.2
D 1 47 364742 3650.39 410 400 99.8
D 5 222 202543 2025.3 410 400 99.8
D 2 249 124658 1244.96 410 400 99.8

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