ASTROSAT CZTI

Data Quality Report

Orbit 00386

Creation date: 2024-06-27T13:59:15.764853
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/AS1P01_161T05_9000000058_00386cztM0_level2.evt modeM0/AS1P01_161T05_9000000058_00386cztM0_level2_quad_clean.evt
Size (bytes)938,577,60038,232,000
Size895.1 MB 36.5 MB
Events in quadrant A7,020,048192,791
Events in quadrant B6,794,212185,700
Events in quadrant C6,026,991192,998
Events in quadrant D8,223,826205,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247081
B0240531
C0217681
D0283411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5430410.755064%
B5430160.294659%
C543040.073665%
D54304007.366483%

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 7495 5431 237 237 3.16% 4.36%
B 7495 5431 109 109 1.45% 2.01%
C 7495 5431 35 35 0.47% 0.64%
D 7495 5431 950 950 12.68% 17.49%

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 12 243 211181 550.0 1705 1690 380.9
A 0 238 83812 215.6 1705 1690 380.9
A 15 17 29808 73.82 1705 1690 380.9
B 0 182 74691 180.53 1701 1714 404.2
B 5 176 40004 94.72 1701 1714 404.2
B 0 230 26587 61.53 1701 1714 404.2
C 3 159 79371 183.81 1508 1560 423.3
C 3 9 10761 21.74 1508 1560 423.3
C 1 1 6268 11.12 1508 1560 423.3
D 13 7 1242966 2772.36 1432 1482 447.8
D 10 102 421947 938.94 1432 1482 447.8
D 2 90 376513 837.48 1432 1482 447.8

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