ASTROSAT CZTI

Data Quality Report

Orbit 27848

Creation date: 2024-06-27T19:45:08.618722
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/AS1A10_002T04_9000004022_27848cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27848cztM0_level2_quad_clean.evt
Size (bytes)484,156,800114,903,360
Size461.7 MB 109.6 MB
Events in quadrant A3,276,595799,299
Events in quadrant B3,416,595787,940
Events in quadrant C3,191,039738,058
Events in quadrant D4,367,965732,286

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134710
B0139950
C0131350
D0168930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6048981.620370%
B60481091.802249%
C60491322.182179%
D60492063.405522%

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 7268 6048 6 6 0.08% 0.10%
B 7268 6048 13 13 0.18% 0.21%
C 7269 6049 0 0 0.00% 0.00%
D 7269 6049 182 182 2.50% 3.01%

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 6 16 43017 253.68 838 824 166.3
A 13 254 10767 59.78 838 824 166.3
A 3 137 7248 38.62 838 824 166.3
B 0 190 91346 596.84 810 793 151.7
B 10 245 56718 368.61 810 793 151.7
B 15 32 36890 237.92 810 793 151.7
C 14 238 127341 706.9 778 785 179.0
C 3 233 14797 78.27 778 785 179.0
C 6 112 7861 39.52 778 785 179.0
D 1 52 1008135 5414.41 798 778 186.1
D 13 104 164351 879.18 798 778 186.1
D 2 250 135373 723.43 798 778 186.1

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