ASTROSAT CZTI

Data Quality Report

Orbit 25789

Creation date: 2024-06-27T19:21:27.181852
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_068T01_9000003756_25789cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25789cztM0_level2_quad_clean.evt
Size (bytes)163,566,72032,760,000
Size156.0 MB 31.2 MB
Events in quadrant A1,935,840206,805
Events in quadrant B850,723235,698
Events in quadrant C867,631218,502
Events in quadrant D1,193,543217,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068770
B034720
C035200
D045310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152551733.901639%
B152590.590164%
C1525332.163934%
D1524392.559055%

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 1525 1525 383 383 25.11% 25.11%
B 1525 1525 0 0 0.00% 0.00%
C 1525 1525 2 2 0.13% 0.13%
D 1524 1524 24 24 1.57% 1.57%

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 1152782 27205.75 202 198 42.4
A 13 254 2282 49.19 202 198 42.4
A 3 137 1824 38.38 202 198 42.4
B 0 190 6899 157.2 213 208 42.6
B 4 171 5924 134.29 213 208 42.6
B 12 111 4840 108.82 213 208 42.6
C 14 238 33243 669.51 205 206 49.3
C 0 207 29916 602.09 205 206 49.3
C 3 233 4161 80.15 205 206 49.3
D 1 52 333726 6402.1 212 207 52.1
D 8 195 41881 799.96 212 207 52.1
D 12 233 8717 163.35 212 207 52.1

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