ASTROSAT CZTI

Data Quality Report

Orbit 39943

Creation date: 2024-06-27T22:10:25.215094
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_044T21_9000005512_39943cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39943cztM0_level2_quad_clean.evt
Size (bytes)507,369,60087,243,840
Size483.9 MB 83.2 MB
Events in quadrant A3,557,566611,737
Events in quadrant B2,680,355630,915
Events in quadrant C6,631,032519,533
Events in quadrant D5,474,042484,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141583
B0118182
C0236782
D0201542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56431432.534113%
B5643350.620237%
C564390215.984405%
D564387115.435052%

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 7167 5644 140 140 1.95% 2.48%
B 7167 5644 22 22 0.31% 0.39%
C 7166 5643 786 786 10.97% 13.93%
D 7167 5644 882 882 12.31% 15.63%

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 495290 3921.64 616 603 126.1
A 2 79 478995 3792.46 616 603 126.1
A 6 10 106767 841.62 616 603 126.1
B 5 255 83891 689.56 616 598 120.8
B 0 230 65765 539.5 616 598 120.8
B 5 32 60990 499.97 616 598 120.8
C 9 54 4107159 30756.44 573 577 133.5
C 15 214 224534 1677.34 573 577 133.5
C 0 10 26714 195.75 573 577 133.5
D 2 249 1465136 10459.85 561 545 140.0
D 2 250 767670 5478.67 561 545 140.0
D 12 227 712598 5085.36 561 545 140.0

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