ASTROSAT CZTI

Data Quality Report

Orbit 26451

Creation date: 2024-06-27T19:29:10.943357
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_056T01_9000003824_26451cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26451cztM0_level2_quad_clean.evt
Size (bytes)696,101,760112,916,160
Size663.9 MB 107.7 MB
Events in quadrant A4,185,357714,202
Events in quadrant B4,266,692730,421
Events in quadrant C5,240,450686,886
Events in quadrant D6,793,488677,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182360
B0183600
C0211550
D0262340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87873243.687265%
B87883544.028220%
C87885306.030951%
D87885836.634046%

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 9102 8789 0 0 0.00% 0.00%
B 9103 8790 0 0 0.00% 0.00%
C 9103 8790 92 92 1.01% 1.05%
D 9103 8790 274 274 3.01% 3.12%

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 13 254 12984 54.44 1082 1055 219.1
A 12 189 12902 54.07 1082 1055 219.1
A 3 137 10775 44.36 1082 1055 219.1
B 12 111 26282 120.74 1080 1051 209.0
B 0 190 26024 119.5 1080 1051 209.0
B 11 111 23519 107.51 1080 1051 209.0
C 2 16 651535 2639.85 1043 1045 246.4
C 3 233 347910 1407.66 1043 1045 246.4
C 14 238 163389 658.83 1043 1045 246.4
D 7 80 1284609 5196.92 1041 1014 247.0
D 1 52 1194323 4831.38 1041 1014 247.0
D 11 176 279592 1127.88 1041 1014 247.0

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