ASTROSAT CZTI

Data Quality Report

Orbit 28151

Creation date: 2024-06-27T19:48:36.346115
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/AS1A10_045T04_9000004066_28151cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28151cztM0_level2_quad_clean.evt
Size (bytes)1,759,173,120291,579,840
Size1.6 GB 278.1 MB
Events in quadrant A9,663,1931,950,329
Events in quadrant B11,309,8701,974,039
Events in quadrant C10,344,4231,890,504
Events in quadrant D20,564,3011,591,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0425430
B0473810
C0442860
D0752510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20693810.391437%
B206944692.266357%
C206932751.328952%
D20693304114.695791%

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 31918 20696 0 0 0.00% 0.00%
B 31919 20696 217 217 0.68% 1.05%
C 31918 20696 21 21 0.07% 0.10%
D 31917 20695 2806 2806 8.79% 13.56%

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 13 254 32508 59.79 2502 2451 502.7
A 3 137 24352 43.57 2502 2451 502.7
A 0 226 21487 37.87 2502 2451 502.7
B 10 245 1420069 3001.4 2475 2413 472.3
B 15 32 59322 120.48 2475 2413 472.3
B 12 111 59205 120.24 2475 2413 472.3
C 3 233 517232 923.85 2395 2414 557.3
C 14 238 384991 686.54 2395 2414 557.3
C 2 16 94291 164.87 2395 2414 557.3
D 7 80 5094741 9793.1 2189 2136 520.0
D 1 52 2773194 5328.76 2189 2136 520.0
D 7 223 2547026 4893.83 2189 2136 520.0

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