ASTROSAT CZTI

Data Quality Report

Orbit 33668

Creation date: 2024-06-27T20:51:17.758918
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/AS1T04_076T01_9000004810_33668cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33668cztM0_level2_quad_clean.evt
Size (bytes)499,878,72060,793,920
Size476.7 MB 58.0 MB
Events in quadrant A5,105,619372,079
Events in quadrant B2,939,001379,629
Events in quadrant C3,009,642383,440
Events in quadrant D3,752,611361,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183602
B0118311
C0120401
D0147891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4898113123.091058%
B4898741.510821%
C4898611.245406%
D4898901.837485%

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 6870 4899 974 974 14.18% 19.88%
B 6870 4899 57 57 0.83% 1.16%
C 6870 4899 46 46 0.67% 0.94%
D 6870 4899 82 82 1.19% 1.67%

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 15 169 2759317 26162.58 525 517 105.4
A 9 143 165526 1564.83 525 517 105.4
A 15 237 140764 1330.01 525 517 105.4
B 5 172 187876 1541.26 650 635 121.5
B 0 244 65836 536.7 650 635 121.5
B 5 255 37226 301.2 650 635 121.5
C 15 214 220375 1491.47 643 651 147.3
C 0 10 148157 1001.26 643 651 147.3
C 3 233 109185 736.72 643 651 147.3
D 8 195 682511 4102.06 634 620 166.2
D 13 249 153952 922.4 634 620 166.2
D 2 249 90377 539.95 634 620 166.2

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