ASTROSAT CZTI

Data Quality Report

Orbit 20250

Creation date: 2024-06-27T18:13:00.651132
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/AS1T03_123T01_9000003000_20250cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20250cztM0_level2_quad_clean.evt
Size (bytes)317,280,96054,221,760
Size302.6 MB 51.7 MB
Events in quadrant A2,294,861345,050
Events in quadrant B2,252,721353,238
Events in quadrant C2,224,622321,286
Events in quadrant D2,539,302315,135

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092791
B091311
C090751
D0102291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4359230.527644%
B4359270.619408%
C4359290.665290%
D4359511.169993%

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 4359 4359 1 1 0.02% 0.02%
B 4359 4359 0 0 0.00% 0.00%
C 4359 4359 0 0 0.00% 0.00%
D 4359 4359 35 35 0.80% 0.80%

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 10 253 19346 162.27 583 573 115.7
A 14 238 19102 160.16 583 573 115.7
A 4 2 11617 95.46 583 573 115.7
B 12 111 12806 112.22 576 564 109.1
B 11 111 11685 101.94 576 564 109.1
B 14 111 11031 95.95 576 564 109.1
C 14 238 87715 690.29 542 548 126.3
C 3 233 9425 70.3 542 548 126.3
C 1 16 7324 53.66 542 548 126.3
D 1 52 369389 2753.44 554 538 134.0
D 11 176 28083 205.62 554 538 134.0
D 2 16 22304 162.48 554 538 134.0

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