ASTROSAT CZTI

Data Quality Report

Orbit 27686

Creation date: 2024-06-27T19:43:06.511360
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/AS1A09_038T41_9000003986_27686cztM0_level2.evt modeM0/AS1A09_038T41_9000003986_27686cztM0_level2_quad_clean.evt
Size (bytes)204,871,68045,561,600
Size195.4 MB 43.5 MB
Events in quadrant A1,158,059317,377
Events in quadrant B1,422,815322,042
Events in quadrant C1,310,381301,883
Events in quadrant D2,163,797280,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047670
B056530
C052920
D078910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2177411.883326%
B2177994.547542%
C2177733.353238%
D217633815.533088%

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 3232 2177 1 1 0.03% 0.05%
B 3232 2177 38 38 1.18% 1.75%
C 3232 2177 15 15 0.46% 0.69%
D 3231 2176 302 302 9.35% 13.88%

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 8 192 6562 102.72 298 292 61.0
A 13 254 3781 57.16 298 292 61.0
A 0 226 2698 39.42 298 292 61.0
B 5 172 238598 4145.91 294 288 57.5
B 0 230 15177 259.03 294 288 57.5
B 3 64 8040 134.86 294 288 57.5
C 8 208 170231 2546.67 279 279 66.7
C 14 238 45000 670.13 279 279 66.7
C 3 233 6412 91.9 279 279 66.7
D 6 112 542605 8204.05 274 266 66.1
D 1 52 507306 7670.08 274 266 66.1
D 11 176 30954 464.22 274 266 66.1

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