ASTROSAT CZTI

Data Quality Report

Orbit 15800

Creation date: 2024-06-27T17:13:42.011347
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/AS1T02_058T01_9000002338_15800cztM0_level2.evt modeM0/AS1T02_058T01_9000002338_15800cztM0_level2_quad_clean.evt
Size (bytes)1,225,045,440205,663,680
Size1.1 GB 196.1 MB
Events in quadrant A9,619,2571,272,763
Events in quadrant B9,448,7641,291,495
Events in quadrant C8,623,7611,240,284
Events in quadrant D8,229,2461,221,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395196
B0385043
C0361403
D0360803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174405513.159404%
B174412591.485007%
C174412171.244195%
D174411550.888711%

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 19602 17445 284 284 1.45% 1.63%
B 19602 17445 35 35 0.18% 0.20%
C 19602 17445 3 3 0.02% 0.02%
D 19602 17445 8 8 0.04% 0.05%

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 15 239 1257257 2922.5 2120 2075 429.5
A 14 254 172763 397.42 2120 2075 429.5
A 0 226 18626 38.54 2120 2075 429.5
B 7 220 354946 858.26 2147 2095 411.1
B 10 245 192886 464.07 2147 2095 411.1
B 0 229 90104 214.07 2147 2095 411.1
C 14 238 312970 644.53 2059 2078 482.4
C 7 247 218810 449.32 2059 2078 482.4
C 10 22 42531 83.87 2059 2078 482.4
D 1 52 92526 160.29 2069 2029 564.6
D 2 234 79712 137.59 2069 2029 564.6
D 2 152 67848 116.58 2069 2029 564.6

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