ASTROSAT CZTI

Data Quality Report

Orbit 27669

Creation date: 2024-06-27T19:42:48.788731
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/AS1T03_257T01_9000003976_27669cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27669cztM0_level2_quad_clean.evt
Size (bytes)490,901,76067,224,960
Size468.2 MB 64.1 MB
Events in quadrant A2,211,937458,006
Events in quadrant B2,564,582462,018
Events in quadrant C2,246,367442,062
Events in quadrant D7,513,057331,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098340
B0106880
C098460
D0256790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487650.102543%
B4877621.271273%
C4877320.656141%
D4876195039.991797%

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 4876 4876 0 0 0.00% 0.00%
B 4877 4877 23 23 0.47% 0.47%
C 4877 4877 0 0 0.00% 0.00%
D 4876 4876 1907 1907 39.11% 39.11%

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 13 254 7743 61.56 571 559 116.7
A 0 13 5747 44.46 571 559 116.7
A 3 137 5606 43.25 571 559 116.7
B 10 245 321499 2912.2 565 550 110.2
B 12 111 13471 117.24 565 550 110.2
B 11 111 12369 107.24 565 550 110.2
C 14 238 88784 678.08 545 549 130.1
C 3 233 15683 116.3 545 549 130.1
C 8 128 10189 74.08 545 549 130.1
D 1 52 5783282 56119.32 426 413 103.0
D 2 250 84890 819.8 426 413 103.0
D 2 234 20271 192.71 426 413 103.0

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