ASTROSAT CZTI

Data Quality Report

Orbit 40709

Creation date: 2024-06-27T22:19:26.756741
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/AS1A12_029T02_9000005558_40709cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40709cztM0_level2_quad_clean.evt
Size (bytes)299,358,72070,545,600
Size285.5 MB 67.3 MB
Events in quadrant A2,385,772484,981
Events in quadrant B2,104,808502,633
Events in quadrant C4,005,204418,453
Events in quadrant D2,239,930417,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113811617
B0106861403
C0175502810
D0111671310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02215
B02417
C02316
D02415

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010311
B010412
C01039
D010414

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A442080.180995%
B4443190.427639%
C433552112.018454%
D44822736.091031%

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 7143 4555 7 7 0.10% 0.15%
B 7144 4564 8 8 0.11% 0.18%
C 7143 4470 541 541 7.57% 12.10%
D 7144 4596 47 47 0.66% 1.02%

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 409525 4073.25 486 476 100.4
A 2 79 73307 725.24 486 476 100.4
A 15 174 14017 134.84 486 476 100.4
B 0 190 74462 785.53 484 472 94.2
B 5 255 73482 775.12 484 472 94.2
B 3 112 21785 226.27 484 472 94.2
C 9 187 2119782 20957.01 431 433 101.1
C 15 214 178673 1762.51 431 433 101.1
C 14 254 11354 107.99 431 433 101.1
D 2 249 192826 1713.53 456 444 112.3
D 12 191 110158 977.21 456 444 112.3
D 2 250 95711 848.53 456 444 112.3

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