ASTROSAT CZTI

Data Quality Report

Orbit 38883

Creation date: 2024-06-27T21:57:38.992381
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_011T42_9000005412_38883cztM0_level2.fits modeM0/AS1A12_011T42_9000005412_38883cztM0_level2_quad_clean.evt
Size (bytes)408,922,56088,263,360
Size390.0 MB 84.2 MB
Events in quadrant A2,872,343630,276
Events in quadrant B2,509,715650,547
Events in quadrant C2,535,639622,844
Events in quadrant D6,830,766419,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116253
B0105912
C0104422
D0237682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4990450.901804%
B4990260.521042%
C499080.160321%
D4990143028.657315%

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 7113 4991 31 31 0.44% 0.62%
B 7113 4991 14 14 0.20% 0.28%
C 7113 4991 6 6 0.08% 0.12%
D 7113 4990 1453 1453 20.43% 29.12%

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 390474 3245.36 592 582 120.1
A 13 248 138718 1149.81 592 582 120.1
A 9 143 41437 340.07 592 582 120.1
B 4 81 84988 742.06 594 579 113.7
B 5 184 42874 371.83 594 579 113.7
B 5 172 38989 337.67 594 579 113.7
C 15 214 208457 1518.11 584 590 136.9
C 0 10 15848 111.43 584 590 136.9
C 12 249 13712 95.83 584 590 136.9
D 12 227 4537785 37162.82 498 484 122.1
D 5 222 69910 568.63 498 484 122.1
D 2 250 69327 563.86 498 484 122.1

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