ASTROSAT CZTI

Data Quality Report

Orbit 38030

Creation date: 2024-06-27T21:47:33.140998
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/AS1A11_082T01_9000005356_38030cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38030cztM0_level2_quad_clean.evt
Size (bytes)382,060,80089,732,160
Size364.4 MB 85.6 MB
Events in quadrant A2,849,430613,518
Events in quadrant B2,809,013628,484
Events in quadrant C2,621,894621,520
Events in quadrant D5,465,558496,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115153
B0115882
C0106102
D0196232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5098160.313849%
B5098751.471165%
C5098140.274617%
D509876915.084347%

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 7071 5099 7 7 0.10% 0.14%
B 7071 5099 49 49 0.69% 0.96%
C 7071 5099 8 8 0.11% 0.16%
D 7071 5099 751 751 10.62% 14.73%

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 364954 3056.8 591 581 119.2
A 12 16 123032 1027.27 591 581 119.2
A 12 194 22037 180.0 591 581 119.2
B 5 255 246266 2188.2 589 573 112.3
B 0 213 85784 758.91 589 573 112.3
B 5 172 58394 514.97 589 573 112.3
C 15 214 220495 1631.01 580 585 134.8
C 1 23 33700 245.6 580 585 134.8
C 3 233 33262 242.36 580 585 134.8
D 12 227 2092011 15648.73 546 530 133.7
D 12 233 481971 3602.2 546 530 133.7
D 2 250 245094 1829.86 546 530 133.7

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