ASTROSAT CZTI

Data Quality Report

Orbit 32654

Creation date: 2024-06-27T20:40:29.916323
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/AS1A10_057T03_9000004722_32654cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32654cztM0_level2_quad_clean.evt
Size (bytes)1,256,244,480103,440,960
Size1.2 GB 98.6 MB
Events in quadrant A4,426,133358,217
Events in quadrant B9,582,176250,235
Events in quadrant C8,956,494226,666
Events in quadrant D14,521,4351,716,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162143
B0315142
C0296402
D0565505

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0190
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0900
C0900
D04120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45124489.929078%
B4451347878.139744%
C4401320572.824358%
D200039864.929261%

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 6424 4512 396 396 6.16% 8.78%
B 6363 4451 3242 3242 50.95% 72.84%
C 6270 4358 2776 2776 44.27% 63.70%
D 28275 20007 943 943 3.34% 4.71%

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 1 39 1383315 12935.88 534 524 106.9
A 1 25 648719 6063.8 534 524 106.9
A 1 23 182451 1701.91 534 524 106.9
B 3 43 5161262 78069.39 335 329 66.1
B 3 250 927774 14029.45 335 329 66.1
B 10 191 912150 13793.11 335 329 66.1
C 8 35 3836189 49785.93 317 318 77.0
C 8 163 1832395 23778.6 317 318 77.0
C 8 147 891843 11571.14 317 318 77.0
D 12 222 2076526 4018.79 2216 2173 516.2
D 8 195 852477 1647.35 2216 2173 516.2
D 12 6 812014 1568.96 2216 2173 516.2

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