ASTROSAT CZTI

Data Quality Report

Orbit 11225

Creation date: 2024-06-27T16:10:00.340979
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/AS1T01_200T01_9000001638_11225cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11225cztM0_level2_quad_clean.evt
Size (bytes)360,613,44049,800,960
Size343.9 MB 47.5 MB
Events in quadrant A5,640,226240,692
Events in quadrant B1,712,818358,021
Events in quadrant C1,361,946352,206
Events in quadrant D1,992,671333,610

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189161
B072110
C064670
D080230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3123162752.097342%
B3123521.665066%
C3123140.448287%
D3123732.337496%

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 3123 3123 1245 1245 39.87% 39.87%
B 3123 3123 33 33 1.06% 1.06%
C 3123 3123 9 9 0.29% 0.29%
D 3123 3123 72 72 2.31% 2.31%

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 5 2531006 49570.51 243 238 51.1
A 14 238 2049288 40135.03 243 238 51.1
A 8 15 44465 866.28 243 238 51.1
B 4 239 240840 3658.04 333 325 65.7
B 4 80 67875 1027.38 333 325 65.7
B 15 204 65760 995.21 333 325 65.7
C 4 254 97597 1274.77 324 325 76.3
C 13 61 2388 27.04 324 325 76.3
C 3 202 734 5.36 324 325 76.3
D 14 34 343977 4363.89 324 316 78.8
D 8 195 114955 1455.72 324 316 78.8
D 10 253 106581 1349.38 324 316 78.8

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