ASTROSAT CZTI

Data Quality Report

Orbit 24220

Creation date: 2024-06-27T19:03:37.126847
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_010T12_9000003582_24220cztM0_level2.evt modeM0/AS1A07_010T12_9000003582_24220cztM0_level2_quad_clean.evt
Size (bytes)558,005,760111,519,360
Size532.2 MB 106.4 MB
Events in quadrant A3,765,679725,847
Events in quadrant B3,810,116735,315
Events in quadrant C3,709,157711,393
Events in quadrant D5,116,679694,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159521
B0159651
C0155571
D0201851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73302393.260573%
B73312603.546583%
C73311922.619015%
D73312233.041877%

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 7495 7330 38 38 0.51% 0.52%
B 7496 7332 57 57 0.76% 0.78%
C 7496 7332 5 5 0.07% 0.07%
D 7496 7332 69 69 0.92% 0.94%

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 6 16 274844 1505.18 904 885 182.0
A 13 254 11249 56.94 904 885 182.0
A 0 226 7940 38.76 904 885 182.0
B 12 17 175896 1022.26 897 876 171.2
B 15 33 44931 257.32 897 876 171.2
B 0 245 43389 248.31 897 876 171.2
C 14 238 138424 678.93 867 872 202.6
C 2 16 101723 497.78 867 872 202.6
C 7 247 78886 385.06 867 872 202.6
D 8 195 1306468 6088.26 883 855 214.4
D 12 233 364833 1697.28 883 855 214.4
D 7 238 39448 179.96 883 855 214.4

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