ASTROSAT CZTI

Data Quality Report

Orbit 01048

Creation date: 2024-06-27T14:06:42.691067
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/AS1P01_998T02_9000000190_01048cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01048cztM0_level2_quad_clean.evt
Size (bytes)1,239,655,680127,984,320
Size1.2 GB 122.1 MB
Events in quadrant A8,936,394849,050
Events in quadrant B9,679,699851,553
Events in quadrant C9,571,504828,082
Events in quadrant D8,851,450818,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319702
B0341552
C0338623
D0317282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A761660.078782%
B7616861.129202%
C7615630.827315%
D7615260.341431%

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 8196 7618 295 295 3.60% 3.87%
B 8196 7618 541 541 6.60% 7.10%
C 8195 7617 522 522 6.37% 6.85%
D 8195 7617 390 390 4.76% 5.12%

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 11 79 8276 10.56 2327 2343 561.9
A 3 111 7263 8.76 2327 2343 561.9
A 13 9 6965 8.23 2327 2343 561.9
B 15 22 226196 388.41 2448 2456 576.0
B 8 234 45228 74.25 2448 2456 576.0
B 5 249 36817 59.65 2448 2456 576.0
C 15 241 362633 572.95 2254 2337 628.8
C 8 208 317420 501.05 2254 2337 628.8
C 3 111 32568 48.07 2254 2337 628.8
D 1 83 528277 787.8 2165 2243 667.7
D 10 125 97602 142.81 2165 2243 667.7
D 10 85 42723 60.62 2165 2243 667.7

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