ASTROSAT CZTI

Data Quality Report

Orbit 29225

Creation date: 2024-06-27T20:01:43.346755
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_102T02_9000004200_29225cztM0_level2.evt modeM0/AS1A10_102T02_9000004200_29225cztM0_level2_quad_clean.evt
Size (bytes)1,872,011,520336,755,520
Size1.7 GB 321.2 MB
Events in quadrant A10,751,6952,262,449
Events in quadrant B12,638,8402,262,284
Events in quadrant C16,045,6072,131,608
Events in quadrant D15,846,0552,099,602

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04280
C04280
D04280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449234
B0508574
C0609784
D0612854

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209672821.344971%
B209685242.499046%
C2096815347.315910%
D2096810665.083937%

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 25867 20971 83 83 0.32% 0.40%
B 25868 20972 184 184 0.71% 0.88%
C 25868 20972 598 598 2.31% 2.85%
D 25868 20972 805 805 3.11% 3.84%

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 234260 435.29 2718 2670 532.0
A 13 254 39305 68.86 2718 2670 532.0
A 0 13 34688 60.18 2718 2670 532.0
B 10 245 1275286 2623.96 2645 2580 485.0
B 0 229 611392 1255.2 2645 2580 485.0
B 0 183 239806 489.09 2645 2580 485.0
C 3 233 5594971 9684.76 2545 2561 577.4
C 14 238 444242 764.89 2545 2561 577.4
C 2 114 49205 80.78 2545 2561 577.4
D 1 52 4339722 7234.15 2589 2528 599.5
D 8 195 585531 972.41 2589 2528 599.5
D 13 153 216829 357.44 2589 2528 599.5

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