ASTROSAT CZTI

Data Quality Report

Orbit 27742

Creation date: 2024-06-27T19:43:45.329122
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/AS1A09_038T43_9000003994_27742cztM0_level2.evt modeM0/AS1A09_038T43_9000003994_27742cztM0_level2_quad_clean.evt
Size (bytes)314,573,76084,159,360
Size300.0 MB 80.3 MB
Events in quadrant A2,044,254564,678
Events in quadrant B2,082,146575,964
Events in quadrant C2,590,958547,562
Events in quadrant D2,497,079538,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092280
B092080
C0105330
D0105870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A457950.109194%
B458030.065502%
C4580791.724891%
D4580471.026201%

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 4579 4579 4 4 0.09% 0.09%
B 4580 4580 1 1 0.02% 0.02%
C 4580 4580 32 32 0.70% 0.70%
D 4580 4580 52 52 1.14% 1.14%

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 0 13 19848 182.93 522 510 105.7
A 13 254 8394 74.58 522 510 105.7
A 10 67 6649 58.07 522 510 105.7
B 12 111 12191 117.44 520 508 99.5
B 0 229 11709 112.6 520 508 99.5
B 4 200 11426 109.75 520 508 99.5
C 3 233 496516 4245.43 497 498 116.8
C 14 238 79543 676.55 497 498 116.8
C 6 112 73017 620.69 497 498 116.8
D 1 52 261620 2160.18 503 487 120.9
D 11 176 211291 1743.84 503 487 120.9
D 2 250 57947 475.33 503 487 120.9

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