ASTROSAT CZTI

Data Quality Report

Orbit 36751

Creation date: 2024-06-27T21:31:10.567343
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/AS1A11_101T01_9000005238_36751cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36751cztM0_level2_quad_clean.evt
Size (bytes)449,150,40085,789,440
Size428.3 MB 81.8 MB
Events in quadrant A2,591,078573,423
Events in quadrant B2,749,177585,499
Events in quadrant C2,956,516573,807
Events in quadrant D4,954,270502,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110743
B0115772
C0119342
D0181422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518480.154321%
B5184631.215278%
C5184631.215278%
D518467312.982253%

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 7066 5185 5 5 0.07% 0.10%
B 7066 5185 42 42 0.59% 0.81%
C 7066 5185 53 53 0.75% 1.02%
D 7066 5185 678 678 9.60% 13.08%

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 211448 1733.62 602 591 121.6
A 9 143 48513 394.0 602 591 121.6
A 13 254 7796 59.24 602 591 121.6
B 0 213 112386 972.41 602 586 115.0
B 4 171 84696 731.57 602 586 115.0
B 5 255 56417 485.61 602 586 115.0
C 14 254 228352 1645.12 591 594 138.4
C 15 214 220549 1588.76 591 594 138.4
C 0 10 124472 894.79 591 594 138.4
D 12 227 2108710 15506.94 560 545 135.9
D 7 223 170083 1247.06 560 545 135.9
D 13 249 130163 953.43 560 545 135.9

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