ASTROSAT CZTI

Data Quality Report

Orbit 23457

Creation date: 2024-06-27T18:54:34.964166
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/AS1A07_100T02_9000003470_23457cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23457cztM0_level2_quad_clean.evt
Size (bytes)1,211,037,120186,713,280
Size1.1 GB 178.1 MB
Events in quadrant A5,807,9791,271,389
Events in quadrant B6,190,8171,290,945
Events in quadrant C5,924,1321,231,765
Events in quadrant D17,907,567993,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255782
B0263682
C0256332
D0617532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12533330.263305%
B12533730.582462%
C12534930.741982%
D12534422933.740227%

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 13948 12535 1 1 0.01% 0.01%
B 13948 12535 8 8 0.06% 0.06%
C 13949 12536 2 2 0.01% 0.02%
D 13949 12534 4092 4092 29.34% 32.65%

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 15 174 70647 231.27 1484 1451 299.2
A 13 254 22306 69.7 1484 1451 299.2
A 14 235 15477 46.88 1484 1451 299.2
B 0 190 102274 361.34 1485 1446 279.0
B 15 35 75152 264.14 1485 1446 279.0
B 0 219 57751 201.78 1485 1446 279.0
C 14 238 223806 669.82 1425 1432 332.0
C 10 9 59649 175.36 1425 1432 332.0
C 7 247 31635 90.98 1425 1432 332.0
D 1 52 9854821 34354.25 1176 1140 286.8
D 7 238 1715300 5976.31 1176 1140 286.8
D 7 38 1029858 3586.56 1176 1140 286.8

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