ASTROSAT CZTI

Data Quality Report

Orbit 27536

Creation date: 2024-06-27T19:41:08.907730
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_038T16_9000003938_27536cztM0_level2.evt modeM0/AS1A09_038T16_9000003938_27536cztM0_level2_quad_clean.evt
Size (bytes)375,897,60089,772,480
Size358.5 MB 85.6 MB
Events in quadrant A2,295,109609,079
Events in quadrant B2,505,756617,997
Events in quadrant C2,426,745592,077
Events in quadrant D3,817,244549,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101190
B0106970
C0104540
D0146220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4987160.320834%
B4987581.163024%
C4988330.661588%
D49883877.758621%

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 4987 4987 14 14 0.28% 0.28%
B 4987 4987 45 45 0.90% 0.90%
C 4988 4988 4 4 0.08% 0.08%
D 4988 4988 317 317 6.36% 6.36%

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 52075 442.92 569 557 116.3
A 6 16 45867 389.55 569 557 116.3
A 13 254 8854 71.33 569 557 116.3
B 10 245 228087 2090.58 568 553 108.8
B 0 230 21465 192.14 568 553 108.8
B 12 111 13205 116.25 568 553 108.8
C 7 221 179972 1390.76 547 550 129.0
C 14 238 89673 690.82 547 550 129.0
C 2 16 23283 176.21 547 550 129.0
D 1 52 1395536 11004.77 526 511 126.8
D 7 80 233991 1841.83 526 511 126.8
D 2 250 74760 585.72 526 511 126.8

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