ASTROSAT CZTI

Data Quality Report

Orbit 28626

Creation date: 2024-06-27T19:54:09.233028
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/AS1A10_045T06_9000004108_28626cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28626cztM0_level2_quad_clean.evt
Size (bytes)1,876,302,720303,782,400
Size1.7 GB 289.7 MB
Events in quadrant A11,497,0331,915,435
Events in quadrant B13,613,9271,918,264
Events in quadrant C11,715,5961,885,743
Events in quadrant D18,356,2221,807,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0503525
B0562655
C0505835
D0716725

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243421910.784652%
B243426522.678498%
C243434431.819825%
D2434313085.373208%

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 27452 24344 27 27 0.10% 0.11%
B 27452 24341 414 414 1.51% 1.70%
C 27453 24343 0 0 0.00% 0.00%
D 27453 24345 1052 1052 3.83% 4.32%

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 15 174 112483 186.25 2933 2868 588.5
A 13 254 42859 67.95 2933 2868 588.5
A 15 47 38464 60.48 2933 2868 588.5
B 10 245 1895823 3463.7 2889 2816 546.5
B 14 207 166136 298.83 2889 2816 546.5
B 12 111 70067 123.05 2889 2816 546.5
C 14 238 503173 759.26 2819 2836 659.0
C 7 247 138983 206.6 2819 2836 659.0
C 14 254 82728 121.24 2819 2836 659.0
D 1 52 5076158 7621.85 2800 2728 665.6
D 8 195 1956459 2935.1 2800 2728 665.6
D 2 250 545801 815.86 2800 2728 665.6

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