ASTROSAT CZTI

Data Quality Report

Orbit 33284

Creation date: 2024-06-27T20:47:03.537787
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_072T01_9000004780_33284cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33284cztM0_level2_quad_clean.evt
Size (bytes)575,107,20073,949,760
Size548.5 MB 70.5 MB
Events in quadrant A2,685,235483,514
Events in quadrant B4,510,162457,918
Events in quadrant C4,047,632451,294
Events in quadrant D5,779,171437,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119243
B0172362
C0156552
D0213042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5842220.376583%
B58424237.240671%
C58422774.741527%
D58424287.326258%

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 7155 5843 11 11 0.15% 0.19%
B 7155 5843 225 225 3.14% 3.85%
C 7155 5843 246 246 3.44% 4.21%
D 7155 5843 361 361 5.05% 6.18%

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 17 43722 315.3 678 664 136.6
A 13 254 9537 64.97 678 664 136.6
A 15 169 7687 51.43 678 664 136.6
B 5 172 733685 5813.04 661 643 126.1
B 0 219 714461 5660.6 661 643 126.1
B 5 200 198413 1568.32 661 643 126.1
C 1 23 1064038 7103.11 647 652 149.7
C 15 214 244791 1630.78 647 652 149.7
C 0 10 133045 884.35 647 652 149.7
D 8 195 1894627 11534.38 639 625 164.2
D 12 218 349965 2127.46 639 625 164.2
D 12 6 204240 1240.01 639 625 164.2

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