ASTROSAT CZTI

Data Quality Report

Orbit 21720

Creation date: 2024-06-27T18:31:23.293995
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_039T01_9000003216_21720cztM0_level2.evt modeM0/AS1A07_039T01_9000003216_21720cztM0_level2_quad_clean.evt
Size (bytes)1,568,854,080380,698,560
Size1.5 GB 363.1 MB
Events in quadrant A9,723,2492,533,971
Events in quadrant B10,445,5112,593,528
Events in quadrant C13,166,3852,515,237
Events in quadrant D12,764,5262,447,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436603
B0448733
C0532793
D0520733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A209185392.576728%
B209185122.447653%
C2091912125.793776%
D209198954.278407%

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 22148 20920 158 158 0.71% 0.76%
B 22148 20921 72 72 0.33% 0.34%
C 22149 20921 609 609 2.75% 2.91%
D 22149 20922 458 458 2.07% 2.19%

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 15 236 407596 843.97 2407 2352 480.2
A 13 254 35393 68.81 2407 2352 480.2
A 10 253 22257 41.45 2407 2352 480.2
B 3 64 571661 1242.66 2417 2350 458.1
B 0 230 115186 246.29 2417 2350 458.1
B 0 197 96534 205.58 2417 2350 458.1
C 8 208 3658396 6764.18 2329 2336 540.5
C 14 238 365414 671.74 2329 2336 540.5
C 10 23 29706 50.64 2329 2336 540.5
D 1 52 1691169 2992.82 2351 2282 564.3
D 13 153 675969 1193.82 2351 2282 564.3
D 1 20 546819 964.96 2351 2282 564.3

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