ASTROSAT CZTI

Data Quality Report

Orbit 03961

Creation date: 2024-06-27T14:35:42.524907
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/AS1G05_246T02_9000000504_03961cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03961cztM0_level2_quad_clean.evt
Size (bytes)462,254,40051,094,080
Size440.8 MB 48.7 MB
Events in quadrant A4,235,868297,984
Events in quadrant B2,864,440298,361
Events in quadrant C2,200,561299,046
Events in quadrant D4,349,909290,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161570
B0119160
C0103760
D0162870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51381062.063060%
B5138551.070455%
C513810.019463%
D51384608.952900%

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 5138 5138 53 53 1.03% 1.03%
B 5138 5138 32 32 0.62% 0.62%
C 5138 5138 0 0 0.00% 0.00%
D 5138 5138 367 367 7.14% 7.14%

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 4 48 1377530 11419.27 578 565 120.6
A 13 251 464603 3848.3 578 565 120.6
A 0 118 90477 745.65 578 565 120.6
B 15 204 182464 1596.34 585 572 113.9
B 10 16 142595 1246.43 585 572 113.9
B 4 81 119749 1045.93 585 572 113.9
C 10 65 15157 110.49 559 561 132.1
C 13 61 4759 31.78 559 561 132.1
C 12 4 1395 6.31 559 561 132.1
D 2 232 1027097 7766.92 534 519 132.2
D 2 63 967043 7312.56 534 519 132.2
D 10 186 134008 1009.96 534 519 132.2

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