ASTROSAT CZTI

Data Quality Report

Orbit 21807

Creation date: 2024-06-27T18:32:28.406607
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/AS1A07_004T01_9000003230_21807cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21807cztM0_level2_quad_clean.evt
Size (bytes)266,221,44042,871,680
Size253.9 MB 40.9 MB
Events in quadrant A1,996,167262,902
Events in quadrant B2,016,055265,130
Events in quadrant C1,847,700256,448
Events in quadrant D1,947,873249,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082001
B082251
C077411
D081391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3722621.665771%
B3722561.504567%
C3722441.182160%
D3722370.994089%

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 4532 3723 25 25 0.55% 0.67%
B 4532 3723 11 11 0.24% 0.30%
C 4532 3723 0 0 0.00% 0.00%
D 4532 3723 4 4 0.09% 0.11%

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 14 235 166278 1695.0 473 462 97.8
A 13 254 7400 70.92 473 462 97.8
A 0 226 4068 36.86 473 462 97.8
B 0 197 56303 606.97 471 460 92.0
B 3 64 47161 507.61 471 460 92.0
B 0 190 31213 334.26 471 460 92.0
C 14 238 69176 630.62 455 455 109.0
C 8 128 3801 30.7 455 455 109.0
C 13 61 3206 25.24 455 455 109.0
D 1 52 88121 777.12 459 444 112.8
D 13 104 53803 472.94 459 444 112.8
D 13 153 34161 298.85 459 444 112.8

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