ASTROSAT CZTI

Data Quality Report

Orbit 20160721_G05_230T04_9000000550_level2

Creation date: 2025-11-03T18:09:02.220578
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_230T04_9000000550cztM0_level2.fits modeM0/AS1G05_230T04_9000000550cztM0_level2_quad_clean.evt
Size (bytes)975,951,3601,212,687,360
Size930.7 MB 1.1 GB
Events in quadrant A5,871,3307,844,953
Events in quadrant B5,605,3467,701,165
Events in quadrant C5,872,6887,706,902
Events in quadrant D4,772,7446,050,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022000
B022000
C022000
D022000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02396440
B02627640
C02295330
D03929090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10837025632.365046%
B10837143534.016757%
C1083719600.885846%
D1083711526914.089563%

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 126552 108356 0 0 0.00% 0.00%
B 126552 108341 0 0 0.00% 0.00%
C 126552 108371 0 0 0.00% 0.00%
D 126552 108367 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 0 29 4947 8.94 1529 1430 393.6
A 7 110 4791 8.54 1529 1430 393.6
A 9 19 4506 7.82 1529 1430 393.6
B 2 9 4886 11.83 1481 1412 293.6
B 12 226 4065 9.04 1481 1412 293.6
B 14 254 3906 8.49 1481 1412 293.6
C 1 80 4318 7.02 1549 1438 410.4
C 1 81 4217 6.77 1549 1438 410.4
C 12 241 4129 6.56 1549 1438 410.4
D 11 82 4091 7.85 1362 1242 362.8
D 3 14 3651 6.64 1362 1242 362.8
D 6 231 3595 6.48 1362 1242 362.8

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