ASTROSAT CZTI

Data Quality Report

Orbit 42810

Creation date: 2024-06-27T22:44:32.384355
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/AS1C07_001T12_9000005826_42810cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42810cztM0_level2_quad_clean.evt
Size (bytes)303,416,64086,463,360
Size289.4 MB 82.5 MB
Events in quadrant A3,075,720568,803
Events in quadrant B2,759,821587,490
Events in quadrant C2,511,323568,411
Events in quadrant D2,474,225524,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125122
B0120592
C0109802
D0114802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52641172.222644%
B5264450.854863%
C526470.132979%
D5264631.196809%

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 7237 5265 102 102 1.41% 1.94%
B 7237 5265 28 28 0.39% 0.53%
C 7237 5265 5 5 0.07% 0.09%
D 7237 5265 53 53 0.73% 1.01%

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 567430 4995.32 550 539 113.5
A 15 237 303230 2667.25 550 539 113.5
A 12 189 33053 286.51 550 539 113.5
B 0 229 409068 3825.62 551 535 106.8
B 4 171 96031 894.25 551 535 106.8
B 5 255 40709 376.2 551 535 106.8
C 15 214 213332 1704.87 538 541 124.8
C 14 254 60027 476.6 538 541 124.8
C 15 111 46436 367.71 538 541 124.8
D 10 118 108574 822.13 535 519 131.4
D 12 6 84603 639.75 535 519 131.4
D 1 52 57679 434.9 535 519 131.4

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