ASTROSAT CZTI

Data Quality Report

Orbit 20151223_G04_003T02_9000000228_level2

Creation date: 2025-01-04T18:45:05.957107
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/AS1G04_003T02_9000000228cztM0_level2.fits modeM0/AS1G04_003T02_9000000228cztM0_level2_quad_clean.evt
Size (bytes)111,709,440150,168,960
Size106.5 MB 143.2 MB
Events in quadrant A653,966962,327
Events in quadrant B649,872972,606
Events in quadrant C644,470935,016
Events in quadrant D489,422733,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0557230
B0614280
C0575610
D0991100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1366150.036601%
B13661820.600249%
C13661360.263524%
D13661285020.862309%

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 16966 13659 0 0 0.00% 0.00%
B 16965 13659 0 0 0.00% 0.00%
C 16966 13658 0 0 0.00% 0.00%
D 16965 13645 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 29 582 10.47 169 160 40.3
A 7 110 555 9.8 169 160 40.3
A 14 188 516 8.84 169 160 40.3
B 2 9 527 10.97 171 164 33.1
B 5 128 450 8.64 171 164 33.1
B 14 254 428 7.98 171 164 33.1
C 9 242 440 6.61 170 158 42.6
C 2 127 437 6.54 170 158 42.6
C 12 241 427 6.31 170 158 42.6
D 11 82 422 8.38 139 128 35.1
D 6 231 381 7.21 139 128 35.1
D 3 14 375 7.04 139 128 35.1

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