ASTROSAT CZTI

Data Quality Report

Orbit 25344

Creation date: 2024-06-27T19:16:35.252658
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/AS1A09_059T01_9000003706_25344cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25344cztM0_level2_quad_clean.evt
Size (bytes)516,516,48088,139,520
Size492.6 MB 84.1 MB
Events in quadrant A3,536,061577,661
Events in quadrant B3,554,595580,188
Events in quadrant C3,822,312540,115
Events in quadrant D4,304,004532,785

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145200
B0145320
C0152770
D0171050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62741001.593880%
B62741111.769206%
C62742313.681862%
D62741001.593880%

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 7574 6274 0 0 0.00% 0.00%
B 7574 6275 0 0 0.00% 0.00%
C 7574 6275 35 35 0.46% 0.56%
D 7574 6275 30 30 0.40% 0.48%

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 8 192 35762 196.31 908 895 177.6
A 13 254 8874 44.92 908 895 177.6
A 0 226 7869 39.26 908 895 177.6
B 3 112 54389 329.66 891 873 162.3
B 12 111 19010 111.73 891 873 162.3
B 11 111 17275 101.04 891 873 162.3
C 9 54 365934 1896.36 842 850 192.5
C 14 238 138933 717.25 842 850 192.5
C 3 233 34544 175.02 842 850 192.5
D 8 195 542899 2615.01 871 850 207.3
D 1 52 212746 1022.25 871 850 207.3
D 12 233 107772 515.83 871 850 207.3

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