ASTROSAT CZTI

Data Quality Report

Orbit 33687

Creation date: 2024-06-27T20:51:32.342181
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/AS1T04_090T01_9000004812_33687cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33687cztM0_level2_quad_clean.evt
Size (bytes)489,170,88089,732,160
Size466.5 MB 85.6 MB
Events in quadrant A4,513,307560,814
Events in quadrant B3,540,757597,040
Events in quadrant C3,072,787608,315
Events in quadrant D3,326,922578,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169743
B0139712
C0123532
D0135202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A531967412.671555%
B53193145.903365%
C5319981.842452%
D53191112.086858%

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 7081 5320 599 599 8.46% 11.26%
B 7081 5320 262 262 3.70% 4.92%
C 7081 5320 91 91 1.29% 1.71%
D 7081 5320 103 103 1.45% 1.94%

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 15 237 1326806 11282.89 585 574 117.5
A 15 169 897382 7629.58 585 574 117.5
A 13 6 13503 109.99 585 574 117.5
B 5 172 1025989 8869.62 604 589 115.6
B 15 85 30687 260.35 604 589 115.6
B 0 213 27537 233.1 604 589 115.6
C 0 10 261177 1883.1 600 606 138.4
C 15 214 228488 1646.87 600 606 138.4
C 14 254 128389 923.47 600 606 138.4
D 8 195 368059 2294.13 591 577 160.2
D 13 249 188523 1173.31 591 577 160.2
D 2 249 131842 819.46 591 577 160.2

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