ASTROSAT CZTI

Data Quality Report

Orbit 25535

Creation date: 2024-06-27T19:18:45.384178
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_147T01_9000003722_25535cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25535cztM0_level2_quad_clean.evt
Size (bytes)491,607,36081,823,680
Size468.8 MB 78.0 MB
Events in quadrant A3,487,097524,923
Events in quadrant B3,525,991532,356
Events in quadrant C3,814,862484,798
Events in quadrant D3,623,366486,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139920
B0141210
C0151030
D0144290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64431131.753841%
B64431492.312587%
C64432153.336955%
D6443831.288220%

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 7633 6444 0 0 0.00% 0.00%
B 7633 6444 0 0 0.00% 0.00%
C 7633 6444 39 39 0.51% 0.61%
D 7633 6444 4 4 0.05% 0.06%

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 10106 51.49 901 886 179.1
A 3 137 7938 39.38 901 886 179.1
A 0 226 7798 38.6 901 886 179.1
B 0 190 27441 156.09 890 868 170.2
B 12 111 20208 113.6 890 868 170.2
B 11 111 18507 103.61 890 868 170.2
C 2 16 381442 1950.58 838 843 195.1
C 14 238 137028 697.95 838 843 195.1
C 5 112 18341 89.68 838 843 195.1
D 8 195 254901 1216.31 858 834 208.9
D 1 52 88410 419.26 858 834 208.9
D 12 217 40030 187.64 858 834 208.9

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