ASTROSAT CZTI

Data Quality Report

Orbit 00713

Creation date: 2024-06-27T14:01:55.800559
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/AS1P01_147T01_9000000106_00713cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00713cztM0_level2_quad_clean.evt
Size (bytes)1,379,574,72075,458,880
Size1.3 GB 72.0 MB
Events in quadrant A9,337,568450,075
Events in quadrant B10,473,392449,451
Events in quadrant C11,189,843436,668
Events in quadrant D10,284,460425,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331241
B0363701
C0385011
D0358932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7526410.544778%
B7526540.717513%
C7526480.637789%
D75261672.218974%

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 7581 7527 446 446 5.88% 5.93%
B 7581 7527 632 632 8.34% 8.40%
C 7581 7527 658 658 8.68% 8.74%
D 7581 7527 898 898 11.85% 11.93%

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 15 171 90793 150.83 2411 2431 585.8
A 11 79 9515 12.09 2411 2431 585.8
A 3 111 7616 8.85 2411 2431 585.8
B 5 247 746600 1250.05 2499 2506 595.3
B 7 221 73452 119.19 2499 2506 595.3
B 0 207 41436 65.4 2499 2506 595.3
C 3 95 529441 834.43 2247 2324 631.7
C 3 31 485077 764.2 2247 2324 631.7
C 3 15 452090 711.98 2247 2324 631.7
D 6 226 878368 1282.52 2182 2264 683.1
D 0 25 806495 1177.31 2182 2264 683.1
D 12 233 212928 308.39 2182 2264 683.1

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