ASTROSAT CZTI

Data Quality Report

Orbit 41817

Creation date: 2024-06-27T22:33:10.134816
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/AS1A12_093T02_9000005704_41817cztM0_level2.fits modeM0/AS1A12_093T02_9000005704_41817cztM0_level2_quad_clean.evt
Size (bytes)746,400,960196,493,760
Size711.8 MB 187.4 MB
Events in quadrant A6,942,2131,322,508
Events in quadrant B5,581,1941,357,628
Events in quadrant C7,242,0791,243,228
Events in quadrant D6,921,3681,185,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281138
B0249244
C0288334
D0290464

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12152630.518433%
B12154270.222149%
C121544884.015139%
D121542502.056936%

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 40695 12157 41 41 0.10% 0.34%
B 40695 12155 8 8 0.02% 0.07%
C 40695 12155 484 484 1.19% 3.98%
D 40695 12156 241 241 0.59% 1.98%

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 1233673 4460.06 1348 1319 276.3
A 14 24 248605 894.96 1348 1319 276.3
A 12 189 118363 423.6 1348 1319 276.3
B 4 171 163907 629.57 1341 1301 258.3
B 0 183 52355 197.67 1341 1301 258.3
B 12 111 33186 123.45 1341 1301 258.3
C 0 10 1755671 5858.55 1276 1281 299.5
C 15 214 488076 1625.59 1276 1281 299.5
C 15 159 21379 67.11 1276 1281 299.5
D 13 249 572671 1766.02 1310 1272 323.6
D 12 6 419410 1292.34 1310 1272 323.6
D 12 79 355052 1093.43 1310 1272 323.6

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