ASTROSAT CZTI

Data Quality Report

Orbit 16447

Creation date: 2024-06-27T17:22:49.314879
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_069T04_9000002428_16447cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16447cztM0_level2_quad_clean.evt
Size (bytes)458,337,60084,127,680
Size437.1 MB 80.2 MB
Events in quadrant A2,903,712543,974
Events in quadrant B3,359,075557,278
Events in quadrant C4,458,624500,597
Events in quadrant D2,748,504523,481

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127021
B0138451
C0172211
D0124771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60371702.815968%
B60371973.263210%
C603769411.495776%
D6037961.590194%

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 6583 6038 7 7 0.11% 0.12%
B 6583 6038 11 11 0.17% 0.18%
C 6583 6038 318 318 4.83% 5.27%
D 6583 6038 0 0 0.00% 0.00%

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 15 174 111626 752.69 724 706 147.4
A 0 226 6391 38.58 724 706 147.4
A 12 194 5433 32.08 724 706 147.4
B 15 35 251889 1778.82 729 711 141.2
B 4 173 98681 693.82 729 711 141.2
B 3 209 48560 338.86 729 711 141.2
C 4 254 1261057 7801.53 678 680 161.6
C 3 233 435296 2690.2 678 680 161.6
C 14 238 103558 636.8 678 680 161.6
D 2 234 23299 130.69 711 690 173.0
D 6 18 20410 113.99 711 690 173.0
D 1 52 14418 79.36 711 690 173.0

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