ASTROSAT CZTI

Data Quality Report

Orbit 41089

Creation date: 2024-06-27T22:24:19.009830
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/AS1A12_095T02_9000005596_41089cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41089cztM0_level2_quad_clean.evt
Size (bytes)397,932,48093,101,760
Size379.5 MB 88.8 MB
Events in quadrant A3,247,205638,401
Events in quadrant B3,282,439643,082
Events in quadrant C2,881,307623,600
Events in quadrant D4,858,106500,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132093
B0140552
C0123222
D0188642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5923120.202600%
B59231101.857167%
C5923340.574033%
D592388915.009286%

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 7235 5924 5 5 0.07% 0.08%
B 7235 5924 62 62 0.86% 1.05%
C 7235 5924 27 27 0.37% 0.46%
D 7235 5924 730 730 10.09% 12.32%

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 10 83 567644 4181.14 651 638 135.6
A 12 189 84612 619.23 651 638 135.6
A 2 79 54375 396.26 651 638 135.6
B 0 186 375777 2975.39 643 627 126.1
B 5 255 198916 1572.67 643 627 126.1
B 5 32 79582 626.21 643 627 126.1
C 15 214 254824 1696.33 637 641 149.8
C 0 10 99705 661.12 637 641 149.8
C 14 254 17675 113.68 637 641 149.8
D 2 249 2390736 16023.72 598 580 149.2
D 13 249 88565 589.86 598 580 149.2
D 2 234 29485 193.78 598 580 149.2

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