ASTROSAT CZTI

Data Quality Report

Orbit 40273

Creation date: 2024-06-27T22:14:26.093597
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_056T02_9000005538_40273cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40273cztM0_level2_quad_clean.evt
Size (bytes)310,248,00089,225,280
Size295.9 MB 85.1 MB
Events in quadrant A2,711,633616,873
Events in quadrant B2,452,230630,606
Events in quadrant C2,418,968591,302
Events in quadrant D3,526,211525,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109663
B0102982
C099852
D0138022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4816190.394518%
B4816541.121262%
C4816150.311462%
D48162254.671927%

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 6969 4817 4 4 0.06% 0.08%
B 6969 4817 36 36 0.52% 0.75%
C 6969 4817 7 7 0.10% 0.15%
D 6969 4817 201 201 2.88% 4.17%

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 443629 3864.45 566 557 114.7
A 13 248 54961 474.51 566 557 114.7
A 13 6 11585 96.19 566 557 114.7
B 0 245 139171 1293.1 564 550 107.2
B 5 255 60027 554.82 564 550 107.2
B 0 230 28330 259.14 564 550 107.2
C 15 214 208665 1633.82 549 553 127.4
C 14 254 29452 226.88 549 553 127.4
C 0 10 23690 181.64 549 553 127.4
D 12 227 491417 3802.64 532 518 129.1
D 12 0 344540 2664.89 532 518 129.1
D 1 47 314901 2435.3 532 518 129.1

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