ASTROSAT CZTI

Data Quality Report

Orbit 27752

Creation date: 2024-06-27T19:43:54.709242
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/AS1A10_002T05_9000004000_27752cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27752cztM0_level2_quad_clean.evt
Size (bytes)544,311,360108,247,680
Size519.1 MB 103.2 MB
Events in quadrant A3,717,301699,051
Events in quadrant B3,719,265699,811
Events in quadrant C4,291,115675,866
Events in quadrant D4,233,332667,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160730
B0160410
C0176390
D0179440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7710300.389105%
B7709490.635621%
C77091311.699312%
D7709500.648593%

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 9120 7712 3 3 0.03% 0.04%
B 9119 7711 1 1 0.01% 0.01%
C 9119 7710 3 3 0.03% 0.04%
D 9119 7711 41 41 0.45% 0.53%

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 6 16 57315 298.78 937 916 188.8
A 0 13 26403 135.02 937 916 188.8
A 8 192 15091 75.09 937 916 188.8
B 0 190 23485 126.42 933 908 178.6
B 12 111 22082 118.56 933 908 178.6
B 4 52 21182 113.52 933 908 178.6
C 3 233 600203 2814.98 909 915 212.9
C 14 238 142976 667.29 909 915 212.9
C 13 61 6333 25.45 909 915 212.9
D 1 52 540610 2457.54 914 890 219.6
D 2 250 162184 734.43 914 890 219.6
D 2 234 32029 141.79 914 890 219.6

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