ASTROSAT CZTI

Data Quality Report

Orbit 41428

Creation date: 2024-06-27T22:28:52.694103
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_035T01_9000005666_41428cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41428cztM0_level2_quad_clean.evt
Size (bytes)351,221,76088,248,960
Size335.0 MB 84.2 MB
Events in quadrant A3,066,405603,096
Events in quadrant B2,646,490616,186
Events in quadrant C3,066,156553,218
Events in quadrant D3,811,252530,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123193
B0114612
C0123652
D0148692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5276240.454890%
B5276360.682335%
C52762464.662623%
D52761963.714936%

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 7037 5277 3 3 0.04% 0.06%
B 7037 5277 18 18 0.26% 0.34%
C 7037 5277 237 237 3.37% 4.49%
D 7037 5277 168 168 2.39% 3.18%

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 525456 4256.08 599 587 123.3
A 2 79 193956 1568.0 599 587 123.3
A 12 189 23628 186.84 599 587 123.3
B 5 255 110312 956.01 594 578 114.8
B 0 190 84359 729.91 594 578 114.8
B 5 252 59218 510.88 594 578 114.8
C 0 10 652458 4961.01 561 563 131.4
C 15 214 213237 1618.48 561 563 131.4
C 15 111 6523 45.36 561 563 131.4
D 1 47 627185 4464.81 576 560 140.3
D 12 79 395970 2817.36 576 560 140.3
D 13 249 195485 1388.87 576 560 140.3

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