ASTROSAT CZTI

Data Quality Report

Orbit 28694

Creation date: 2024-06-27T19:55:02.651651
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_021T04_9000004116_28694cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28694cztM0_level2_quad_clean.evt
Size (bytes)643,158,72086,143,680
Size613.4 MB 82.2 MB
Events in quadrant A4,046,090520,901
Events in quadrant B4,284,965528,004
Events in quadrant C4,510,534502,850
Events in quadrant D6,091,047497,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170982
B0178792
C0183752
D0237902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80611371.699541%
B80622473.063756%
C80624475.544530%
D80623794.701067%

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 8566 8062 1 1 0.01% 0.01%
B 8567 8062 11 11 0.13% 0.14%
C 8567 8063 25 25 0.29% 0.31%
D 8567 8062 135 135 1.58% 1.67%

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 15 174 37832 177.17 1029 1004 207.9
A 1 113 26193 121.18 1029 1004 207.9
A 13 254 15187 68.23 1029 1004 207.9
B 10 245 249436 1257.41 1016 990 197.6
B 12 111 24547 119.22 1016 990 197.6
B 11 111 22214 107.42 1016 990 197.6
C 2 16 304713 1325.59 974 982 229.1
C 14 238 212923 924.99 974 982 229.1
C 3 233 108920 471.08 974 982 229.1
D 1 52 1457807 6018.43 993 962 242.1
D 8 195 534477 2204.02 993 962 242.1
D 2 250 116936 479.1 993 962 242.1

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