ASTROSAT CZTI

Data Quality Report

Orbit 50682

Creation date: 2025-02-10T03:08:29.951925
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_241T01_9000006446_50682cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50682cztM0_level2_quad_clean.evt
Size (bytes)498,421,44094,250,880
Size475.3 MB 89.9 MB
Events in quadrant A3,959,528620,013
Events in quadrant B4,348,083669,679
Events in quadrant C6,039,472568,450
Events in quadrant D3,613,472555,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158953
B0172522
C0223052
D0151362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6307991.569684%
B63071953.091803%
C63086139.717819%
D63081862.948637%

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 7522 6307 76 76 1.01% 1.21%
B 7522 6307 125 125 1.66% 1.98%
C 7523 6308 561 561 7.46% 8.89%
D 7523 6308 114 114 1.52% 1.81%

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 10 253 293049 1764.75 671 654 165.7
A 4 3 226283 1361.79 671 654 165.7
A 4 4 160997 967.75 671 654 165.7
B 4 170 533139 3786.01 668 646 140.6
B 0 229 461802 3278.81 668 646 140.6
B 5 185 157321 1113.96 668 646 140.6
C 13 113 951076 5322.08 648 642 178.6
C 4 5 508816 2845.59 648 642 178.6
C 13 3 357340 1997.38 648 642 178.6
D 2 249 224829 1232.94 655 632 181.8
D 7 110 147027 805.08 655 632 181.8
D 2 153 134089 733.93 655 632 181.8

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