ASTROSAT CZTI

Data Quality Report

Orbit 44028

Creation date: 2024-06-27T22:58:29.172389
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/AS1A13_023T03_9000005934_44028cztM0_level2.fits modeM0/AS1A13_023T03_9000005934_44028cztM0_level2_quad_clean.evt
Size (bytes)507,888,000118,684,800
Size484.4 MB 113.2 MB
Events in quadrant A4,912,215783,861
Events in quadrant B4,074,151806,439
Events in quadrant C3,938,862785,557
Events in quadrant D5,297,019699,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193172
B0171042
C0167412
D0207682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74422903.896802%
B74423785.079280%
C74422072.781510%
D74424305.778017%

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 7762 7445 39 39 0.50% 0.52%
B 7762 7445 84 84 1.08% 1.13%
C 7762 7445 35 35 0.45% 0.47%
D 7762 7445 227 227 2.92% 3.05%

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 83 1223099 6558.96 881 860 186.3
A 15 222 236855 1266.43 881 860 186.3
A 15 223 33017 172.57 881 860 186.3
B 4 171 399307 2245.54 874 844 177.4
B 7 221 70213 390.93 874 844 177.4
B 0 213 59910 332.87 874 844 177.4
C 14 254 247225 1173.65 875 880 209.9
C 14 96 110542 522.46 875 880 209.9
C 3 233 109068 515.43 875 880 209.9
D 7 80 1042148 4683.9 863 837 222.3
D 1 52 223530 1001.69 863 837 222.3
D 12 17 148344 663.5 863 837 222.3

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