ASTROSAT CZTI

Data Quality Report

Orbit 41010

Creation date: 2024-06-27T22:23:50.956742
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_042T01_9000005588_41010cztM0_level2.fits modeM0/AS1A12_042T01_9000005588_41010cztM0_level2_quad_clean.evt
Size (bytes)302,990,40089,400,960
Size289.0 MB 85.3 MB
Events in quadrant A2,747,864610,220
Events in quadrant B2,445,307619,939
Events in quadrant C2,964,049583,997
Events in quadrant D2,668,157541,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111372
B0105551
C0119411
D0112921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501080.159681%
B5010120.239521%
C5010150.299401%
D5010390.778443%

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 7044 5011 2 2 0.03% 0.04%
B 7044 5011 3 3 0.04% 0.06%
C 7044 5011 9 9 0.13% 0.18%
D 7044 5011 28 28 0.40% 0.56%

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 468355 4034.27 569 559 116.0
A 12 189 74322 636.13 569 559 116.0
A 13 254 7846 62.84 569 559 116.0
B 0 186 180567 1694.35 562 546 106.2
B 5 255 33222 307.55 562 546 106.2
B 12 111 12968 116.92 562 546 106.2
C 3 233 309589 2408.21 556 561 128.3
C 15 214 213744 1661.3 556 561 128.3
C 10 70 179736 1396.28 556 561 128.3
D 13 171 93726 690.96 557 541 134.9
D 12 233 83466 614.88 557 541 134.9
D 2 153 78587 578.71 557 541 134.9

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