ASTROSAT CZTI

Data Quality Report

Orbit 36823

Creation date: 2024-06-27T21:32:03.639558
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/AS1A11_075T01_9000005244_36823cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36823cztM0_level2_quad_clean.evt
Size (bytes)779,860,80067,000,320
Size743.7 MB 63.9 MB
Events in quadrant A2,737,398501,712
Events in quadrant B13,122,195205,224
Events in quadrant C3,148,232503,425
Events in quadrant D4,256,837450,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115433
B0425002
C0126442
D0161362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5221280.536296%
B5221510497.759050%
C52211232.355871%
D52215149.844857%

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 7044 5222 15 15 0.21% 0.29%
B 7043 5220 4941 4941 70.15% 94.66%
C 7044 5222 90 90 1.28% 1.72%
D 7044 5222 498 498 7.07% 9.54%

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 10 83 244408 1972.12 610 598 123.6
A 0 247 51865 414.69 610 598 123.6
A 13 248 28458 225.35 610 598 123.6
B 12 1 11245755 195644.56 300 293 57.5
B 5 172 454195 7896.83 300 293 57.5
B 0 221 61260 1060.68 300 293 57.5
C 14 254 454312 3268.55 597 603 138.8
C 15 214 223316 1604.44 597 603 138.8
C 0 10 119760 858.41 597 603 138.8
D 1 52 1385030 9931.15 572 557 139.4
D 12 233 244686 1751.2 572 557 139.4
D 13 249 207818 1486.73 572 557 139.4

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