ASTROSAT CZTI

Data Quality Report

Orbit 25057

Creation date: 2024-06-27T19:13:18.967788
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_206T01_9000003672_25057cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25057cztM0_level2_quad_clean.evt
Size (bytes)500,958,72073,540,800
Size477.8 MB 70.1 MB
Events in quadrant A3,193,344468,327
Events in quadrant B3,506,815477,789
Events in quadrant C3,229,365441,594
Events in quadrant D4,821,371406,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130342
B0140632
C0131052
D0183962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210400.644122%
B62101001.610306%
C6209580.934128%
D62093235.202126%

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 7535 6211 0 0 0.00% 0.00%
B 7535 6211 38 38 0.50% 0.61%
C 7534 6210 0 0 0.00% 0.00%
D 7534 6210 288 288 3.82% 4.64%

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 11412 63.78 828 813 166.2
A 3 137 7083 37.73 828 813 166.2
A 0 226 7057 37.57 828 813 166.2
B 4 80 184749 1180.88 830 812 155.8
B 10 251 31822 199.08 830 812 155.8
B 12 111 17983 110.24 830 812 155.8
C 14 238 127236 692.85 785 792 182.5
C 7 247 19168 100.69 785 792 182.5
C 3 233 17594 92.07 785 792 182.5
D 1 52 1454579 7748.63 770 748 187.6
D 8 195 285039 1515.21 770 748 187.6
D 12 233 42521 222.64 770 748 187.6

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