ASTROSAT CZTI

Data Quality Report

Orbit 33901

Creation date: 2024-06-27T20:53:56.133536
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_090T01_9000004840_33901cztM0_level2.evt modeM0/AS1T04_090T01_9000004840_33901cztM0_level2_quad_clean.evt
Size (bytes)477,241,92070,796,160
Size455.1 MB 67.5 MB
Events in quadrant A2,661,225461,148
Events in quadrant B3,153,869462,931
Events in quadrant C3,131,600447,515
Events in quadrant D5,168,799422,811

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105963
B0123132
C0121062
D0187492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981791.586027%
B49811342.690223%
C49811182.369002%
D498165613.170046%

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 7073 4982 60 60 0.85% 1.20%
B 7073 4982 73 73 1.03% 1.47%
C 7073 4982 88 88 1.24% 1.77%
D 7073 4982 551 551 7.79% 11.06%

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 15 169 165403 1293.57 642 629 127.4
A 10 83 11053 81.83 642 629 127.4
A 13 254 6949 49.62 642 629 127.4
B 5 172 441815 3759.43 627 614 117.4
B 15 222 105978 897.8 627 614 117.4
B 4 232 28607 238.53 627 614 117.4
C 0 10 438999 3119.76 615 621 140.5
C 15 214 218913 1553.5 615 621 140.5
C 14 67 24174 167.62 615 621 140.5
D 12 235 1451589 10098.28 593 577 143.7
D 8 195 477394 3318.39 593 577 143.7
D 1 52 268234 1862.75 593 577 143.7

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