ASTROSAT CZTI

Data Quality Report

Orbit 36853

Creation date: 2024-06-27T21:32:23.433229
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_075T01_9000005244_36853cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36853cztM0_level2_quad_clean.evt
Size (bytes)353,963,52068,385,600
Size337.6 MB 65.2 MB
Events in quadrant A2,704,452574,987
Events in quadrant B777,6269,244
Events in quadrant C2,784,015587,416
Events in quadrant D4,104,802542,882

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113013
B051552
C0114922
D0157112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5047280.554785%
B50475047100.000000%
C5047470.931246%
D50474619.134139%

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 6990 5048 11 11 0.16% 0.22%
B 6989 5046 1 1 0.01% 0.02%
C 6990 5048 32 32 0.46% 0.63%
D 6990 5048 429 429 6.14% 8.50%

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 230613 1878.08 607 598 122.5
A 13 248 49271 397.42 607 598 122.5
A 15 223 26814 214.06 607 598 122.5
B 12 243 699172 178175.88 11 11 3.9
B 12 144 13039 3320.09 11 11 3.9
B 5 200 6743 1715.6 11 11 3.9
C 15 214 214603 1543.85 601 607 138.6
C 0 10 148583 1067.55 601 607 138.6
C 14 254 37247 264.33 601 607 138.6
D 12 217 1073026 7647.48 580 565 140.2
D 12 227 547430 3899.57 580 565 140.2
D 12 17 76269 539.83 580 565 140.2

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