ASTROSAT CZTI

Data Quality Report

Orbit 42571

Creation date: 2024-06-27T22:41:46.036939
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/AS1C07_001T10_9000005814_42571cztM0_level2.fits modeM0/AS1C07_001T10_9000005814_42571cztM0_level2_quad_clean.evt
Size (bytes)302,918,40087,485,760
Size288.9 MB 83.4 MB
Events in quadrant A2,877,318584,335
Events in quadrant B2,500,316582,283
Events in quadrant C2,525,614577,207
Events in quadrant D2,888,239526,849

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119722
B0114912
C0110403
D0126662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5404200.370096%
B5404891.646928%
C540370.129558%
D54031492.757727%

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 7108 5405 12 12 0.17% 0.22%
B 7108 5405 62 62 0.87% 1.15%
C 7107 5404 3 3 0.04% 0.06%
D 7107 5404 128 128 1.80% 2.37%

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 548400 4643.6 575 562 118.0
A 7 3 37029 309.1 575 562 118.0
A 2 79 34754 289.82 575 562 118.0
B 0 229 180025 1610.12 567 550 111.5
B 0 245 45425 402.59 567 550 111.5
B 5 172 34152 301.45 567 550 111.5
C 15 214 225194 1700.25 562 565 132.1
C 14 254 48345 361.65 562 565 132.1
C 9 54 43180 322.56 562 565 132.1
D 12 6 396330 2925.42 556 541 135.3
D 1 47 92820 682.07 556 541 135.3
D 1 52 83027 609.68 556 541 135.3

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