ASTROSAT CZTI

Data Quality Report

Orbit 50372

Creation date: 2025-01-20T11:03:52.921302
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/AS1C09_003T01_9000006442_50372cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50372cztM0_level2_quad_clean.evt
Size (bytes)803,436,48091,293,120
Size766.2 MB 87.1 MB
Events in quadrant A4,647,287651,273
Events in quadrant B5,203,105658,359
Events in quadrant C8,868,978520,779
Events in quadrant D10,465,735433,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185042
B0203283
C0313312
D0360362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71822193.049290%
B71827049.802283%
C7182164122.848789%
D7182228731.843498%

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 8712 7184 120 120 1.38% 1.67%
B 8712 7184 425 425 4.88% 5.92%
C 8712 7183 1449 1449 16.63% 20.17%
D 8712 7183 1925 1925 22.10% 26.80%

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 8 247 309179 1627.19 765 746 189.5
A 8 38 168135 883.09 765 746 189.5
A 4 3 146510 769.0 765 746 189.5
B 5 172 1181248 7491.09 738 713 157.6
B 10 247 257214 1627.63 738 713 157.6
B 10 43 216852 1371.51 738 713 157.6
C 15 232 1649918 8484.1 691 687 194.4
C 15 234 598035 3072.92 691 687 194.4
C 0 225 421614 2165.36 691 687 194.4
D 7 61 2917076 16048.77 645 623 181.7
D 12 1 2799123 15399.69 645 623 181.7
D 6 191 330551 1815.54 645 623 181.7

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