ASTROSAT CZTI

Data Quality Report

Orbit 18449

Creation date: 2024-06-27T17:49:57.639508
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/AS1A05_199T01_9000002732_18449cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18449cztM0_level2_quad_clean.evt
Size (bytes)1,356,704,640228,939,840
Size1.3 GB 218.3 MB
Events in quadrant A8,632,4711,442,072
Events in quadrant B13,507,9531,417,265
Events in quadrant C8,617,9901,414,885
Events in quadrant D9,090,3511,395,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378894
B0520094
C0375254
D0393815

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183323291.794676%
B1833314207.745595%
C183333541.930944%
D183322541.385555%

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 20807 18332 24 24 0.12% 0.13%
B 20808 18333 891 891 4.28% 4.86%
C 20808 18333 0 0 0.00% 0.00%
D 20807 18332 15 15 0.07% 0.08%

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 4 2 116714 259.21 2201 2155 442.0
A 14 238 24621 50.83 2201 2155 442.0
A 15 174 21260 43.23 2201 2155 442.0
B 10 245 4996775 12061.59 2150 2091 414.1
B 12 111 50219 116.22 2150 2091 414.1
B 11 111 43719 100.53 2150 2091 414.1
C 14 238 326660 656.38 2115 2121 494.4
C 3 233 34431 65.35 2115 2121 494.4
C 13 61 15043 26.13 2115 2121 494.4
D 13 168 478537 915.09 2146 2079 520.7
D 12 110 330559 630.88 2146 2079 520.7
D 2 234 83277 155.95 2146 2079 520.7

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