ASTROSAT CZTI

Data Quality Report

Orbit 37590

Creation date: 2024-06-27T21:41:54.500068
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/AS1T05_053T01_9000005338_37590cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37590cztM0_level2_quad_clean.evt
Size (bytes)476,959,68073,621,440
Size454.9 MB 70.2 MB
Events in quadrant A2,975,432477,776
Events in quadrant B4,783,438442,128
Events in quadrant C2,882,367472,290
Events in quadrant D3,430,252451,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122233
B0178632
C0119912
D0139932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491290.528137%
B549161911.272992%
C5491781.420506%
D54911733.150610%

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 7254 5492 14 14 0.19% 0.25%
B 7254 5492 578 578 7.97% 10.52%
C 7254 5492 74 74 1.02% 1.35%
D 7254 5492 171 171 2.36% 3.11%

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 350127 2701.88 634 623 129.4
A 15 250 57064 436.32 634 623 129.4
A 9 143 38933 296.16 634 623 129.4
B 5 255 1553738 13569.43 602 588 114.5
B 5 172 334306 2915.6 602 588 114.5
B 5 200 203880 1776.1 602 588 114.5
C 15 214 234982 1668.61 603 608 140.5
C 0 10 211776 1503.4 603 608 140.5
C 14 254 49876 350.76 603 608 140.5
D 2 249 547261 3722.44 605 590 146.9
D 10 253 188544 1279.83 605 590 146.9
D 12 233 124139 841.28 605 590 146.9

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