ASTROSAT CZTI

Data Quality Report

Orbit 20181014_C04_007T02_9000002432_level2

Creation date: 2025-11-25T05:15:07.751419
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/AS1C04_007T02_9000002432cztM0_level2.fits modeM0/AS1C04_007T02_9000002432cztM0_level2_quad_clean.evt
Size (bytes)98,720,64094,432,320
Size94.1 MB 90.1 MB
Events in quadrant A595,318558,202
Events in quadrant B570,576556,336
Events in quadrant C582,198528,147
Events in quadrant D509,984485,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230320
B0251430
C0222230
D0240410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105523643.449583%
B105523913.705459%
C105523203.032600%
D105523723.525398%

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 11057 10549 0 0 0.00% 0.00%
B 11057 10547 0 0 0.00% 0.00%
C 11057 10549 0 0 0.00% 0.00%
D 11057 10541 0 0 0.00% 0.00%

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 0 29 565 10.05 154 144 41.9
A 0 30 475 7.9 154 144 41.9
A 7 110 475 7.9 154 144 41.9
B 2 9 471 9.96 150 143 32.9
B 5 225 400 7.8 150 143 32.9
B 2 8 390 7.5 150 143 32.9
C 12 241 442 7.21 153 142 41.6
C 3 126 436 7.07 153 142 41.6
C 2 191 393 6.04 153 142 41.6
D 4 246 436 7.49 145 131 40.7
D 3 31 375 5.99 145 131 40.7
D 6 231 366 5.77 145 131 40.7

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