ASTROSAT CZTI

Data Quality Report

Orbit 27575

Creation date: 2024-06-27T19:41:40.387389
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/AS1A09_038T24_9000003968_27575cztM0_level2.evt modeM0/AS1A09_038T24_9000003968_27575cztM0_level2_quad_clean.evt
Size (bytes)122,667,84035,904,960
Size117.0 MB 34.2 MB
Events in quadrant A806,714245,323
Events in quadrant B874,039254,918
Events in quadrant C824,041243,683
Events in quadrant D1,103,736230,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033700
B035970
C034010
D043130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1528120.785340%
B1529161.046436%
C1529211.373447%
D1529281.831262%

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 2728 1529 4 4 0.15% 0.26%
B 2729 1530 0 0 0.00% 0.00%
C 2729 1530 0 0 0.00% 0.00%
D 2729 1530 34 34 1.25% 2.22%

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 8 192 9449 215.27 206 202 43.0
A 13 254 2671 57.48 206 202 43.0
A 3 137 1840 38.13 206 202 43.0
B 3 64 12806 303.28 212 208 41.5
B 0 230 11317 267.43 212 208 41.5
B 0 244 10254 241.84 212 208 41.5
C 14 238 33832 693.38 202 203 48.5
C 13 61 1362 23.9 202 203 48.5
C 1 16 1159 19.71 202 203 48.5
D 1 52 144623 3011.0 196 191 48.0
D 6 112 134572 2801.46 196 191 48.0
D 2 250 70286 1461.28 196 191 48.0

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