ASTROSAT CZTI

Data Quality Report

Orbit 27851

Creation date: 2024-06-27T19:45:11.092854
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_27851cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27851cztM0_level2_quad_clean.evt
Size (bytes)555,960,960106,335,360
Size530.2 MB 101.4 MB
Events in quadrant A3,453,445722,178
Events in quadrant B3,588,330704,490
Events in quadrant C3,443,534680,588
Events in quadrant D5,905,863654,126

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143010
B0147850
C0141570
D0219240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580831.261398%
B65811091.656283%
C65811402.127336%
D658070410.699088%

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 7750 6580 1 1 0.01% 0.02%
B 7751 6581 3 3 0.04% 0.05%
C 7751 6581 0 0 0.00% 0.00%
D 7750 6580 634 634 8.18% 9.64%

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 56020 316.3 878 861 174.4
A 0 13 11782 62.62 878 861 174.4
A 13 254 11298 59.85 878 861 174.4
B 15 33 113885 700.65 859 838 161.3
B 15 32 61718 377.32 859 838 161.3
B 12 111 18751 111.02 859 838 161.3
C 14 238 135447 683.58 839 846 196.9
C 3 233 37188 184.57 839 846 196.9
C 13 61 5658 24.44 839 846 196.9
D 1 52 2086283 10610.95 822 802 196.5
D 2 250 293809 1490.82 822 802 196.5
D 13 104 252366 1279.96 822 802 196.5

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