ASTROSAT CZTI

Data Quality Report

Orbit 41954

Creation date: 2024-06-27T22:34:57.187166
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/AS1A12_101T01_9000005722_41954cztM0_level2.fits modeM0/AS1A12_101T01_9000005722_41954cztM0_level2_quad_clean.evt
Size (bytes)301,086,72087,837,120
Size287.1 MB 83.8 MB
Events in quadrant A2,760,527595,076
Events in quadrant B2,820,606603,688
Events in quadrant C2,394,595580,115
Events in quadrant D2,776,698528,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110063
B0117012
C0101252
D0117122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5037110.218384%
B50371382.739726%
C503720.039706%
D5037831.647806%

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 7190 5038 4 4 0.06% 0.08%
B 7190 5038 89 89 1.24% 1.77%
C 7190 5038 0 0 0.00% 0.00%
D 7190 5038 69 69 0.96% 1.37%

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 10 83 515907 4336.06 576 565 118.9
A 2 79 14715 119.06 576 565 118.9
A 13 6 6778 52.28 576 565 118.9
B 0 229 396882 3679.3 563 548 107.7
B 5 255 144115 1332.78 563 548 107.7
B 0 190 37393 342.04 563 548 107.7
C 15 214 221811 1720.0 555 560 128.6
C 3 233 6150 43.46 555 560 128.6
C 13 61 3793 25.13 555 560 128.6
D 5 222 164143 1222.45 551 535 133.8
D 13 249 144823 1078.09 551 535 133.8
D 2 249 143078 1065.05 551 535 133.8

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