ASTROSAT CZTI

Data Quality Report

Orbit 40288

Creation date: 2024-06-27T22:14:35.847589
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_056T02_9000005538_40288cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40288cztM0_level2_quad_clean.evt
Size (bytes)317,459,52089,562,240
Size302.8 MB 85.4 MB
Events in quadrant A3,436,177616,425
Events in quadrant B2,336,478634,685
Events in quadrant C2,553,976593,522
Events in quadrant D3,048,881528,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133903
B099632
C0103862
D0124092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4823480.995231%
B4823130.269542%
C4823280.580552%
D48231974.084595%

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 6947 4824 31 31 0.45% 0.64%
B 6947 4824 4 4 0.06% 0.08%
C 6947 4824 22 22 0.32% 0.46%
D 6947 4824 180 180 2.59% 3.73%

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 6 10 667949 5852.31 560 552 114.0
A 10 83 445013 3897.41 560 552 114.0
A 13 248 93220 812.59 560 552 114.0
B 4 171 49611 454.19 563 549 108.0
B 0 245 42605 389.34 563 549 108.0
B 5 255 18657 167.64 563 549 108.0
C 15 214 206612 1612.7 548 552 127.8
C 14 254 167027 1302.89 548 552 127.8
C 3 233 25252 193.31 548 552 127.8
D 1 47 318552 2429.38 532 519 130.9
D 2 250 255995 1951.52 532 519 130.9
D 12 233 180303 1373.33 532 519 130.9

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