ASTROSAT CZTI

Data Quality Report

Orbit 39204

Creation date: 2024-06-27T22:01:46.403686
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_054T04_9000005446_39204cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39204cztM0_level2_quad_clean.evt
Size (bytes)581,454,72075,890,880
Size554.5 MB 72.4 MB
Events in quadrant A2,855,710623,104
Events in quadrant B2,418,245626,710
Events in quadrant C2,518,298589,210
Events in quadrant D13,307,47978,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119623
B0111012
C0110082
D0432072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5432400.736377%
B5432110.202504%
C543280.147275%
D5432489990.187776%

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 5433 27 27 0.38% 0.50%
B 7046 5433 4 4 0.06% 0.07%
C 7046 5433 5 5 0.07% 0.09%
D 7046 5433 3754 3754 53.28% 69.10%

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 449750 3720.56 594 581 120.7
A 13 248 95782 788.57 594 581 120.7
A 9 143 12122 95.6 594 581 120.7
B 5 172 57610 499.47 589 574 114.2
B 5 184 14970 126.07 589 574 114.2
B 12 111 13769 115.55 589 574 114.2
C 15 214 228476 1689.15 575 577 134.9
C 3 233 24611 178.14 575 577 134.9
C 0 10 18075 129.69 575 577 134.9
D 12 235 11704821 143626.17 327 317 81.5
D 12 233 115215 1409.92 327 317 81.5
D 1 47 89464 1093.92 327 317 81.5

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