ASTROSAT CZTI

Data Quality Report

Orbit 17428

Creation date: 2024-06-27T17:36:24.554806
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/AS1A05_198T01_9000002578_17428cztM0_level2.evt modeM0/AS1A05_198T01_9000002578_17428cztM0_level2_quad_clean.evt
Size (bytes)491,754,240100,912,320
Size469.0 MB 96.2 MB
Events in quadrant A3,286,563676,977
Events in quadrant B3,771,836675,565
Events in quadrant C3,292,670637,460
Events in quadrant D4,106,469618,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138322
B0154082
C0137003
D0164452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421851.323781%
B64221462.273435%
C64211081.681981%
D64212163.363962%

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 7726 6423 1 1 0.01% 0.02%
B 7727 6424 38 38 0.49% 0.59%
C 7726 6423 1 1 0.01% 0.02%
D 7726 6423 135 135 1.75% 2.10%

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 4 2 19107 107.41 847 834 170.1
A 0 226 7800 40.95 847 834 170.1
A 12 194 6357 32.46 847 834 170.1
B 7 220 260851 1634.81 840 824 159.1
B 0 219 70878 440.44 840 824 159.1
B 4 216 60593 375.77 840 824 159.1
C 14 238 123977 674.32 791 798 182.7
C 5 218 37275 199.69 791 798 182.7
C 3 233 32190 171.85 791 798 182.7
D 15 0 399192 2050.88 800 778 194.3
D 13 232 229170 1175.67 800 778 194.3
D 13 189 145303 743.96 800 778 194.3

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