ASTROSAT CZTI

Data Quality Report

Orbit 40504

Creation date: 2024-06-27T22:16:54.473432
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_022T01_9000005540_40504cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40504cztM0_level2_quad_clean.evt
Size (bytes)339,863,04092,911,680
Size324.1 MB 88.6 MB
Events in quadrant A2,901,690652,667
Events in quadrant B2,948,616664,326
Events in quadrant C3,069,799609,980
Events in quadrant D3,252,455520,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116263
B0121452
C0122092
D0129952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523380.152876%
B5233631.203898%
C52331302.484235%
D523361711.790560%

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 7326 5234 3 3 0.04% 0.06%
B 7326 5234 33 33 0.45% 0.63%
C 7326 5234 107 107 1.46% 2.04%
D 7326 5234 132 132 1.80% 2.52%

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 476103 3868.32 613 602 122.9
A 12 189 34839 278.53 613 602 122.9
A 2 79 8909 67.58 613 602 122.9
B 3 112 251753 2205.08 601 587 113.9
B 4 171 208277 1823.39 601 587 113.9
B 5 255 122554 1070.8 601 587 113.9
C 14 254 525971 3923.1 581 585 133.9
C 15 214 228944 1705.18 581 585 133.9
C 9 146 16692 120.27 581 585 133.9
D 12 128 251977 1861.56 559 546 135.1
D 12 0 245417 1812.99 559 546 135.1
D 2 250 216105 1595.97 559 546 135.1

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