ASTROSAT CZTI

Data Quality Report

Orbit 06295

Creation date: 2024-06-27T15:05:17.898137
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/AS1A02_118T01_9000000826_06295cztM0_level2.evt modeM0/AS1A02_118T01_9000000826_06295cztM0_level2_quad_clean.evt
Size (bytes)636,874,56090,812,160
Size607.4 MB 86.6 MB
Events in quadrant A4,642,693593,636
Events in quadrant B4,173,254581,989
Events in quadrant C2,962,541603,094
Events in quadrant D7,095,122543,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180992
B0162711
C0127791
D0253511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61291302.121064%
B61295038.206885%
C6129741.207375%
D612996015.663240%

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 7354 6129 8 8 0.11% 0.13%
B 7354 6129 272 272 3.70% 4.44%
C 7354 6129 1 1 0.01% 0.02%
D 7353 6128 859 859 11.68% 14.02%

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 8 15 950519 6378.9 744 729 148.9
A 15 236 809143 5429.4 744 729 148.9
A 13 251 19262 124.47 744 729 148.9
B 3 64 965086 7188.52 724 708 134.2
B 0 219 189879 1410.09 724 708 134.2
B 4 81 109368 809.96 724 708 134.2
C 1 16 116342 701.56 727 731 164.8
C 9 54 7320 39.98 727 731 164.8
C 13 61 5720 30.27 727 731 164.8
D 2 63 3124607 18658.71 694 673 167.4
D 12 220 661313 3945.89 694 673 167.4
D 12 110 206264 1227.96 694 673 167.4

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