ASTROSAT CZTI

Data Quality Report

Orbit 38829

Creation date: 2024-06-27T21:56:59.414778
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_083T02_9000005404_38829cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38829cztM0_level2_quad_clean.evt
Size (bytes)443,422,08089,628,480
Size422.9 MB 85.5 MB
Events in quadrant A3,424,009622,923
Events in quadrant B2,746,214640,870
Events in quadrant C3,013,532605,370
Events in quadrant D6,784,424443,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137132
B0121761
C0125611
D0240251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733931.622187%
B5733430.750044%
C5733741.290773%
D5733135023.547881%

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 7046 5734 74 74 1.05% 1.29%
B 7046 5734 35 35 0.50% 0.61%
C 7046 5734 67 67 0.95% 1.17%
D 7046 5734 1238 1238 17.57% 21.59%

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 13 248 591263 4694.46 623 610 125.8
A 10 83 391818 3109.29 623 610 125.8
A 13 254 11766 88.67 623 610 125.8
B 5 200 194216 1603.36 621 602 120.8
B 4 81 30461 247.27 621 602 120.8
B 0 230 24572 198.5 621 602 120.8
C 1 23 264108 1837.11 607 607 143.4
C 15 214 238411 1657.95 607 607 143.4
C 14 254 74039 511.96 607 607 143.4
D 12 227 2598355 19072.14 549 532 136.2
D 12 3 985264 7229.49 549 532 136.2
D 2 249 562258 4123.96 549 532 136.2

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