ASTROSAT CZTI

Data Quality Report

Orbit 10482

Creation date: 2024-06-27T15:59:44.523017
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/AS1A03_126T01_9000001512_10482cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10482cztM0_level2_quad_clean.evt
Size (bytes)1,762,922,880366,880,320
Size1.6 GB 349.9 MB
Events in quadrant A12,807,1792,360,641
Events in quadrant B13,682,8922,414,140
Events in quadrant C11,534,2892,382,832
Events in quadrant D13,681,7092,239,428

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05100
B05100
C05100
D05100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0541645
B0571145
C0509375
D0576515

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A249391680.673644%
B249395072.032960%
C24939770.308753%
D249392250.902201%

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 30424 24940 13 13 0.04% 0.05%
B 30424 24940 156 156 0.51% 0.63%
C 30424 24941 10 10 0.03% 0.04%
D 30424 24941 122 122 0.40% 0.49%

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 377592 623.89 2980 2919 600.5
A 3 80 332950 549.55 2980 2919 600.5
A 15 239 207808 341.17 2980 2919 600.5
B 4 239 1534349 2748.88 2986 2915 557.1
B 0 214 149382 262.9 2986 2915 557.1
B 0 187 139018 244.3 2986 2915 557.1
C 14 234 54939 77.07 2938 2964 674.4
C 13 61 21680 27.75 2938 2964 674.4
C 14 67 20323 25.74 2938 2964 674.4
D 1 20 896018 1296.72 2896 2822 688.8
D 1 52 628837 908.84 2896 2822 688.8
D 8 195 499460 721.01 2896 2822 688.8

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