ASTROSAT CZTI

Data Quality Report

Orbit 19317

Creation date: 2024-06-27T18:01:19.547957
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/AS1A05_204T01_9000002856_19317cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19317cztM0_level2_quad_clean.evt
Size (bytes)1,223,392,320130,435,200
Size1.1 GB 124.4 MB
Events in quadrant A5,812,023829,018
Events in quadrant B5,907,107837,847
Events in quadrant C5,788,741803,194
Events in quadrant D18,708,843624,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252612
B0253612
C0251062
D0641652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123591080.873857%
B123601241.003236%
C123591431.157052%
D12359431434.905737%

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 13709 12359 2 2 0.01% 0.02%
B 13710 12360 2 2 0.01% 0.02%
C 13709 12360 0 0 0.00% 0.00%
D 13709 12359 3721 3721 27.14% 30.11%

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 5 16 88379 291.47 1477 1444 298.3
A 11 29 35347 113.67 1477 1444 298.3
A 13 254 14445 43.59 1477 1444 298.3
B 3 64 44686 153.26 1468 1426 282.3
B 10 247 39406 134.55 1468 1426 282.3
B 0 198 38640 131.84 1468 1426 282.3
C 14 238 218823 651.18 1413 1416 333.9
C 3 233 58666 171.48 1413 1416 333.9
C 13 61 10035 25.81 1413 1416 333.9
D 10 66 11534036 36999.04 1271 1232 311.7
D 1 52 1434563 4598.35 1271 1232 311.7
D 7 238 631763 2022.84 1271 1232 311.7

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