ASTROSAT CZTI

Data Quality Report

Orbit 01364

Creation date: 2024-06-27T14:11:35.083177
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/AS1G04_014T02_9000000232_01364cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01364cztM0_level2_quad_clean.evt
Size (bytes)1,270,543,680111,876,480
Size1.2 GB 106.7 MB
Events in quadrant A10,315,086713,808
Events in quadrant B10,177,060735,989
Events in quadrant C9,039,563715,404
Events in quadrant D8,451,831701,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360153
B0355822
C0321232
D0304952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74924005.339028%
B74921622.162306%
C7492350.467165%
D7492751.001068%

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 7552 7493 848 848 11.23% 11.32%
B 7552 7493 696 696 9.22% 9.29%
C 7552 7494 445 445 5.89% 5.94%
D 7552 7494 447 447 5.92% 5.96%

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 4 32 430723 741.2 2382 2402 577.9
A 15 127 421324 724.93 2382 2402 577.9
A 15 233 201621 344.74 2382 2402 577.9
B 8 4 317117 528.77 2502 2518 595.0
B 12 52 106392 174.59 2502 2518 595.0
B 6 53 52865 84.62 2502 2518 595.0
C 15 241 239279 377.55 2241 2316 627.6
C 3 111 25377 36.74 2241 2316 627.6
C 3 79 21335 30.3 2241 2316 627.6
D 9 53 190534 276.63 2176 2255 680.6
D 10 125 77460 110.5 2176 2255 680.6
D 13 73 26737 35.97 2176 2255 680.6

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