ASTROSAT CZTI

Data Quality Report

Orbit 30076

Creation date: 2024-06-27T20:10:37.462002
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/AS1A10_071T08_9000004326_30076cztM0_level2.evt modeM0/AS1A10_071T08_9000004326_30076cztM0_level2_quad_clean.evt
Size (bytes)338,290,56046,013,760
Size322.6 MB 43.9 MB
Events in quadrant A2,010,524281,336
Events in quadrant B3,259,717282,430
Events in quadrant C2,146,751268,341
Events in quadrant D2,537,449260,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087701
B0128511
C090241
D0106311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4274340.795508%
B4275581.356725%
C4275601.403509%
D42751002.339181%

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 5244 4275 2 2 0.04% 0.05%
B 5245 4276 0 0 0.00% 0.00%
C 5245 4276 0 0 0.00% 0.00%
D 5245 4276 80 80 1.53% 1.87%

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 8 192 15320 141.05 515 506 105.0
A 13 254 7701 68.51 515 506 105.0
A 3 1 6863 60.53 515 506 105.0
B 6 159 1252853 12677.25 510 498 98.8
B 12 111 12396 120.44 510 498 98.8
B 11 111 11309 109.44 510 498 98.8
C 3 233 134437 1154.97 490 495 116.0
C 14 238 79642 682.48 490 495 116.0
C 2 114 9775 80.02 490 495 116.0
D 13 104 409235 3469.79 489 480 117.8
D 13 168 154997 1311.64 489 480 117.8
D 8 195 63689 536.56 489 480 117.8

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