ASTROSAT CZTI

Data Quality Report

Orbit 40179

Creation date: 2024-06-27T22:13:09.230007
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_032T04_9000005528_40179cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40179cztM0_level2_quad_clean.evt
Size (bytes)1,050,364,800159,445,440
Size1001.7 MB 152.1 MB
Events in quadrant A5,937,9351,159,525
Events in quadrant B5,883,1401,162,554
Events in quadrant C17,941,612744,977
Events in quadrant D8,291,3601,020,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241134
B0250513
C0607693
D0321573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106901141.066417%
B106904003.741815%
C10690445641.683817%
D106906936.482694%

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 15197 10693 90 90 0.59% 0.84%
B 15197 10693 243 243 1.60% 2.27%
C 15197 10693 4433 4433 29.17% 41.46%
D 15197 10693 728 728 4.79% 6.81%

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 872589 3708.6 1165 1143 235.0
A 13 248 298860 1266.99 1165 1143 235.0
A 7 3 158683 670.44 1165 1143 235.0
B 5 255 1020494 4675.83 1148 1116 218.0
B 5 172 150639 685.85 1148 1116 218.0
B 15 85 57112 256.85 1148 1116 218.0
C 9 187 13750010 61655.18 957 965 223.0
C 15 214 375722 1680.53 957 965 223.0
C 9 54 26904 116.32 957 965 223.0
D 12 227 2567173 9316.92 1121 1091 275.4
D 12 233 739090 2679.52 1121 1091 275.4
D 13 249 311869 1128.37 1121 1091 275.4

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