ASTROSAT CZTI

Data Quality Report

Orbit 05495

Creation date: 2024-06-27T14:55:46.960230
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/AS1A02_063T01_9000000702_05495cztM0_level2.evt modeM0/AS1A02_063T01_9000000702_05495cztM0_level2_quad_clean.evt
Size (bytes)1,648,728,000242,026,560
Size1.5 GB 230.8 MB
Events in quadrant A10,337,9121,474,038
Events in quadrant B12,194,3351,487,921
Events in quadrant C14,550,2781,395,554
Events in quadrant D11,291,3831,385,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04684413
B0510816
C05913518
D04990317

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04700
C04700
D04700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230532721.179890%
B230563891.687196%
C2305014006.073753%
D230513961.717930%

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 25797 23061 0 0 0.00% 0.00%
B 25797 23061 58 58 0.22% 0.25%
C 25797 23061 964 964 3.74% 4.18%
D 25797 23060 145 145 0.56% 0.63%

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 15 234 98438 175.91 2658 2592 544.9
A 12 194 26030 43.02 2658 2592 544.9
A 0 226 25836 42.66 2658 2592 544.9
B 10 16 686513 1334.66 2684 2617 512.4
B 15 204 640003 1243.89 2684 2617 512.4
B 5 250 126384 241.54 2684 2617 512.4
C 9 247 4227035 7270.91 2511 2523 581.0
C 1 16 382620 654.19 2511 2523 581.0
C 1 241 118583 199.75 2511 2523 581.0
D 2 33 453840 714.45 2569 2489 631.7
D 8 195 293990 461.42 2569 2489 631.7
D 2 152 258284 404.9 2569 2489 631.7

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