ASTROSAT CZTI

Data Quality Report

Orbit 26748

Creation date: 2024-06-27T19:32:23.584009
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/AS1T03_223T01_9000003850_26748cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26748cztM0_level2_quad_clean.evt
Size (bytes)1,907,418,240199,687,680
Size1.8 GB 190.4 MB
Events in quadrant A8,062,8691,363,206
Events in quadrant B25,972,7791,091,170
Events in quadrant C7,812,5341,327,577
Events in quadrant D14,873,0411,190,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337130
B0878900
C0328050
D0547880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15549850.546659%
B15549763649.109267%
C155491811.164062%
D15550186011.961415%

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 19124 15552 5 5 0.03% 0.03%
B 19124 15552 5915 5915 30.93% 38.03%
C 19124 15552 9 9 0.05% 0.06%
D 19125 15553 1468 1468 7.68% 9.44%

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 13 242215 613.87 1978 1942 391.4
A 11 29 167405 422.74 1978 1942 391.4
A 13 254 25177 59.36 1978 1942 391.4
B 0 189 19455300 63705.68 1636 1597 305.4
B 10 246 54794 174.21 1636 1597 305.4
B 12 111 36283 113.59 1636 1597 305.4
C 14 238 305561 699.93 1877 1890 433.9
C 2 16 115098 260.93 1877 1890 433.9
C 15 208 66857 149.74 1877 1890 433.9
D 7 80 5750902 13005.76 1795 1748 442.0
D 1 52 1655079 3740.17 1795 1748 442.0
D 2 250 224300 503.46 1795 1748 442.0

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