ASTROSAT CZTI

Data Quality Report

Orbit 39448

Creation date: 2024-06-27T22:04:41.643988
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_025T17_9000005476_39448cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39448cztM0_level2_quad_clean.evt
Size (bytes)369,322,56089,795,520
Size352.2 MB 85.6 MB
Events in quadrant A4,174,736597,196
Events in quadrant B2,532,788635,806
Events in quadrant C3,948,799586,167
Events in quadrant D2,626,203549,961

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158843
B0106372
C0148452
D0110872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49991633.260652%
B499960.120024%
C49992034.060812%
D4999360.720144%

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 7122 5000 99 99 1.39% 1.98%
B 7122 5000 2 2 0.03% 0.04%
C 7122 5000 193 193 2.71% 3.86%
D 7122 5000 25 25 0.35% 0.50%

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 15 222 1154420 9678.25 586 576 119.2
A 10 83 421084 3527.15 586 576 119.2
A 15 174 312254 2614.3 586 576 119.2
B 5 172 166907 1468.33 591 576 113.3
B 8 3 23395 201.44 591 576 113.3
B 12 111 14160 119.92 591 576 113.3
C 15 208 1305811 9935.78 569 573 131.4
C 15 214 208631 1583.79 569 573 131.4
C 9 187 131045 993.18 569 573 131.4
D 2 249 118134 835.48 574 558 140.7
D 7 38 68204 480.68 574 558 140.7
D 13 249 60632 426.88 574 558 140.7

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