ASTROSAT CZTI

Data Quality Report

Orbit 23458

Creation date: 2024-06-27T18:54:35.920454
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/AS1A07_100T02_9000003470_23458cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23458cztM0_level2_quad_clean.evt
Size (bytes)645,373,44098,573,760
Size615.5 MB 94.0 MB
Events in quadrant A3,199,114673,687
Events in quadrant B3,268,763692,843
Events in quadrant C3,328,821657,824
Events in quadrant D9,294,000492,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138632
B0140182
C0139903
D0320562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709170.253391%
B6709230.342823%
C6708630.939177%
D6708228934.123435%

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 7669 6710 3 3 0.04% 0.04%
B 7669 6710 1 1 0.01% 0.01%
C 7668 6709 4 4 0.05% 0.06%
D 7668 6709 2212 2212 28.85% 32.97%

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 12 96 42917 260.57 804 788 161.7
A 15 174 28048 168.61 804 788 161.7
A 10 253 12774 74.14 804 788 161.7
B 0 189 25994 162.78 810 790 154.8
B 15 35 24334 152.06 810 790 154.8
B 12 111 17889 110.43 810 790 154.8
C 14 238 121350 661.55 779 784 182.2
C 10 9 51515 278.36 779 784 182.2
C 7 247 33867 181.53 779 784 182.2
D 7 238 3668256 22653.12 665 646 161.9
D 1 52 2863893 17684.95 665 646 161.9
D 12 233 121681 747.58 665 646 161.9

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