ASTROSAT CZTI

Data Quality Report

Orbit 30246

Creation date: 2024-06-27T20:12:38.135844
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/AS1A10_007T01_9000004350_30246cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30246cztM0_level2_quad_clean.evt
Size (bytes)985,242,240150,238,080
Size939.6 MB 143.3 MB
Events in quadrant A6,259,873919,900
Events in quadrant B9,900,771924,087
Events in quadrant C6,268,594908,847
Events in quadrant D6,531,224899,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269262
B0393094
C0265222
D0274102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129911130.869833%
B129901681.293303%
C129901411.085450%
D12990620.477290%

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 14216 12992 15 15 0.11% 0.12%
B 14215 12991 4 4 0.03% 0.03%
C 14215 12992 0 0 0.00% 0.00%
D 14215 12992 16 16 0.11% 0.12%

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 0 13 119959 374.9 1579 1544 315.9
A 8 192 26870 80.18 1579 1544 315.9
A 13 254 24245 71.87 1579 1544 315.9
B 6 159 3642395 11987.31 1561 1520 303.7
B 0 229 65760 211.51 1561 1520 303.7
B 12 111 38203 120.78 1561 1520 303.7
C 14 238 245919 679.36 1525 1535 359.7
C 3 233 49093 132.21 1525 1535 359.7
C 2 114 30172 79.61 1525 1535 359.7
D 8 195 511240 1352.08 1536 1502 377.0
D 1 52 70598 183.28 1536 1502 377.0
D 2 234 60077 155.37 1536 1502 377.0

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