ASTROSAT CZTI

Data Quality Report

Orbit 31231

Creation date: 2024-06-27T20:25:21.096804
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/AS1C06_002T02_9000004518_31231cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31231cztM0_level2_quad_clean.evt
Size (bytes)1,696,832,640277,914,240
Size1.6 GB 265.0 MB
Events in quadrant A8,629,7781,847,363
Events in quadrant B15,364,6571,797,465
Events in quadrant C9,470,5071,775,292
Events in quadrant D16,675,4331,718,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381714
B0594085
C0402824
D0628694

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18559820.441834%
B185585953.206164%
C185594622.489358%
D185597604.095048%

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 20904 18563 9 9 0.04% 0.05%
B 20903 18562 178 178 0.85% 0.96%
C 20904 18563 69 69 0.33% 0.37%
D 20904 18563 489 489 2.34% 2.63%

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 12 96 115628 258.4 2196 2144 439.2
A 13 254 39661 85.42 2196 2144 439.2
A 3 137 21959 45.12 2196 2144 439.2
B 6 159 5391383 13125.61 2159 2103 410.6
B 4 80 327804 793.25 2159 2103 410.6
B 12 18 282585 683.11 2159 2103 410.6
C 0 10 679939 1373.74 2104 2115 493.4
C 14 238 364337 734.11 2104 2115 493.4
C 4 175 75584 148.9 2104 2115 493.4
D 8 195 7393937 13494.88 2093 2052 547.8
D 12 218 290698 526.96 2093 2052 547.8
D 15 0 219316 396.64 2093 2052 547.8

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