ASTROSAT CZTI

Data Quality Report

Orbit 16206

Creation date: 2024-06-27T17:19:19.231397
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_109T01_9000002386_16206cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16206cztM0_level2_quad_clean.evt
Size (bytes)1,523,525,760253,584,000
Size1.4 GB 241.8 MB
Events in quadrant A9,194,6391,621,193
Events in quadrant B9,558,7741,658,316
Events in quadrant C9,643,5651,587,774
Events in quadrant D16,423,0901,465,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478306808
B0492007402
C0486006919
D07726615201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047567
B046654
C047778
D047579

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296
B0319
C03010
D0339

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196861390.706086%
B196311570.799755%
C196481900.967020%
D1912810225.342953%

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 26010 20307 31 31 0.12% 0.15%
B 26010 20228 8 8 0.03% 0.04%
C 26010 20281 2 2 0.01% 0.01%
D 26010 19711 728 728 2.80% 3.69%

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 143726 306.05 2309 2256 462.2
A 4 2 127013 269.89 2309 2256 462.2
A 3 1 24399 47.9 2309 2256 462.2
B 0 198 137057 305.83 2313 2253 440.8
B 3 64 100547 223.0 2313 2253 440.8
B 0 189 78796 173.65 2313 2253 440.8
C 7 247 547605 1055.66 2215 2225 516.6
C 14 238 337771 649.5 2215 2225 516.6
C 3 233 105861 200.6 2215 2225 516.6
D 1 52 5546123 10583.96 2139 2071 523.8
D 2 233 2619994 4997.79 2139 2071 523.8
D 15 0 113695 213.1 2139 2071 523.8

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