ASTROSAT CZTI

Data Quality Report

Orbit 17663

Creation date: 2024-06-27T17:39:17.932784
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_208T01_9000002614_17663cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17663cztM0_level2_quad_clean.evt
Size (bytes)568,831,68090,480,960
Size542.5 MB 86.3 MB
Events in quadrant A3,879,804561,303
Events in quadrant B3,842,596572,636
Events in quadrant C4,571,857545,699
Events in quadrant D4,426,261540,180

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162451
B0160561
C0186371
D0180211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74751822.434783%
B74751892.528428%
C74752393.197324%
D74752082.782609%

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 7665 7476 0 0 0.00% 0.00%
B 7665 7476 8 8 0.10% 0.11%
C 7665 7476 1 1 0.01% 0.01%
D 7665 7476 39 39 0.51% 0.52%

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 14 237 335741 1775.92 921 897 188.5
A 0 226 8038 37.87 921 897 188.5
A 3 137 6825 31.44 921 897 188.5
B 0 229 61048 334.55 916 892 179.8
B 15 35 50460 275.67 916 892 179.8
B 7 220 45080 245.75 916 892 179.8
C 3 233 999546 4786.18 881 886 208.7
C 14 238 133351 634.85 881 886 208.7
C 13 61 6257 25.74 881 886 208.7
D 5 222 421465 1896.64 901 875 221.8
D 1 52 287792 1293.84 901 875 221.8
D 10 70 79894 356.33 901 875 221.8

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