ASTROSAT CZTI

Data Quality Report

Orbit 41614

Creation date: 2024-06-27T22:30:43.294441
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_035T02_9000005680_41614cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41614cztM0_level2_quad_clean.evt
Size (bytes)1,475,614,080331,090,560
Size1.4 GB 315.8 MB
Events in quadrant A11,332,8002,298,332
Events in quadrant B9,969,8942,344,083
Events in quadrant C11,109,4382,229,854
Events in quadrant D20,575,0711,696,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457195
B0442796
C0456435
D0755495

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21135770.364325%
B211341500.709757%
C211343401.608782%
D21134342516.206113%

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 28146 21140 55 55 0.20% 0.26%
B 28145 21139 93 93 0.33% 0.44%
C 28145 21139 325 325 1.15% 1.54%
D 28145 21139 3009 3009 10.69% 14.23%

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 1837450 3828.29 2354 2302 479.4
A 7 16 150196 308.52 2354 2302 479.4
A 2 79 118823 243.07 2354 2302 479.4
B 0 186 480128 1072.57 2325 2255 445.5
B 5 255 89083 194.88 2325 2255 445.5
B 0 189 68496 148.68 2325 2255 445.5
C 0 10 994017 1876.61 2273 2284 528.5
C 15 214 911738 1720.92 2273 2284 528.5
C 0 15 235899 442.06 2273 2284 528.5
D 12 79 6345715 12076.6 2148 2085 525.3
D 13 249 3318704 6313.97 2148 2085 525.3
D 2 249 1883089 3580.94 2148 2085 525.3

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