ASTROSAT CZTI

Data Quality Report

Orbit 25480

Creation date: 2024-06-27T19:18:09.690549
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/AS1C05_012T07_9000003718_25480cztM0_level2.evt modeM0/AS1C05_012T07_9000003718_25480cztM0_level2_quad_clean.evt
Size (bytes)483,719,040127,722,240
Size461.3 MB 121.8 MB
Events in quadrant A3,141,196871,297
Events in quadrant B3,357,753874,743
Events in quadrant C3,149,533839,030
Events in quadrant D4,545,111815,487

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137220
B0142370
C0137170
D0179380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710630.938897%
B6711831.236775%
C67111281.907316%
D67113274.872597%

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 7000 6712 0 0 0.00% 0.00%
B 7001 6713 8 8 0.11% 0.12%
C 7001 6713 0 0 0.00% 0.00%
D 7001 6713 160 160 2.29% 2.38%

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 3 1 22427 134.33 807 789 161.1
A 13 254 11657 67.47 807 789 161.1
A 3 137 7325 40.57 807 789 161.1
B 5 235 115442 761.87 796 776 150.5
B 0 229 57159 374.62 796 776 150.5
B 0 190 32757 212.49 796 776 150.5
C 14 238 123085 679.51 774 777 180.0
C 3 233 10116 51.88 774 777 180.0
C 13 61 5457 26.0 774 777 180.0
D 1 52 890813 4741.62 776 753 187.7
D 8 195 301838 1603.97 776 753 187.7
D 2 244 106700 564.41 776 753 187.7

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