ASTROSAT CZTI

Data Quality Report

Orbit 25147

Creation date: 2024-06-27T19:14:24.019408
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_018T07_9000003680_25147cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25147cztM0_level2_quad_clean.evt
Size (bytes)564,050,880106,611,840
Size537.9 MB 101.7 MB
Events in quadrant A3,597,936686,227
Events in quadrant B3,691,607699,446
Events in quadrant C3,870,269669,951
Events in quadrant D5,410,954648,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157380
B0158770
C0163330
D0213240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7546881.166181%
B75461421.881792%
C75461782.358866%
D75462553.379274%

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 7806 7547 0 0 0.00% 0.00%
B 7806 7546 1 1 0.01% 0.01%
C 7806 7547 1 1 0.01% 0.01%
D 7806 7548 185 185 2.37% 2.45%

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 11071 53.93 931 910 188.4
A 3 137 9076 43.34 931 910 188.4
A 0 226 8037 37.83 931 910 188.4
B 12 111 23096 121.67 932 906 182.4
B 11 111 19788 103.53 932 906 182.4
B 14 111 18222 94.94 932 906 182.4
C 7 247 176972 828.04 898 902 212.6
C 14 238 141869 662.95 898 902 212.6
C 0 207 21982 99.14 898 902 212.6
D 1 52 1324303 6022.94 898 872 219.7
D 8 195 397956 1807.13 898 872 219.7
D 2 244 216940 983.32 898 872 219.7

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