ASTROSAT CZTI

Data Quality Report

Orbit 20181009_A05_069T02_9000002422_level2

Creation date: 2025-11-25T03:36:42.624919
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/AS1A05_069T02_9000002422cztM0_level2.fits modeM0/AS1A05_069T02_9000002422cztM0_level2_quad_clean.evt
Size (bytes)672,027,840616,184,640
Size640.9 MB 587.6 MB
Events in quadrant A4,118,9983,628,669
Events in quadrant B3,978,1923,678,490
Events in quadrant C4,012,0803,472,820
Events in quadrant D3,462,3183,100,934

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01519020
B01589960
C01479500
D01611050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6970815882.278074%
B6970815782.263729%
C6970813261.902221%
D6970818322.628106%

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 80809 69705 0 0 0.00% 0.00%
B 80809 69701 0 0 0.00% 0.00%
C 80809 69704 0 0 0.00% 0.00%
D 80809 69689 0 0 0.00% 0.00%

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 0 29 3857 10.81 1072 1005 263.7
A 7 110 3268 8.58 1072 1005 263.7
A 9 19 3126 8.04 1072 1005 263.7
B 2 9 3304 11.22 1051 1004 205.0
B 2 8 2750 8.52 1051 1004 205.0
B 14 254 2614 7.85 1051 1004 205.0
C 1 81 2956 7.19 1058 984 274.2
C 1 80 2955 7.19 1058 984 274.2
C 12 241 2799 6.62 1058 984 274.2
D 10 189 2501 6.08 990 901 263.2
D 6 231 2491 6.04 990 901 263.2
D 7 3 2451 5.89 990 901 263.2

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