ASTROSAT CZTI

Data Quality Report

Orbit 23316

Creation date: 2024-06-27T18:52:41.885639
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/AS1A07_148T02_9000003444_23316cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23316cztM0_level2_quad_clean.evt
Size (bytes)2,793,352,320495,074,880
Size2.6 GB 472.1 MB
Events in quadrant A19,178,2263,116,394
Events in quadrant B19,288,5863,154,987
Events in quadrant C19,756,1643,046,154
Events in quadrant D23,709,9592,967,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08040
B08040
C08040
D08040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0827098
B0822567
C0831947
D0968417

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A394803010.762411%
B394813090.782655%
C394815401.367747%
D394827451.886936%

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 50820 39488 72 72 0.14% 0.18%
B 50821 39488 8 8 0.02% 0.02%
C 50821 39488 46 46 0.09% 0.12%
D 50821 39489 527 527 1.04% 1.33%

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 6 16 475683 484.05 4852 4739 972.9
A 13 254 62726 59.6 4852 4739 972.9
A 3 137 42267 38.57 4852 4739 972.9
B 0 230 141389 149.75 4822 4703 912.8
B 12 111 113088 118.74 4822 4703 912.8
B 11 111 99914 104.31 4822 4703 912.8
C 14 238 738982 674.12 4675 4709 1089.2
C 10 9 610960 556.58 4675 4709 1089.2
C 7 247 98547 86.15 4675 4709 1089.2
D 1 52 3061102 2675.23 4721 4593 1142.5
D 7 238 2179207 1903.35 4721 4593 1142.5
D 1 239 261304 224.69 4721 4593 1142.5

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