ASTROSAT CZTI

Data Quality Report

Orbit 29452

Creation date: 2024-06-27T20:04:14.032643
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_110T02_9000004234_29452cztM0_level2.evt modeM0/AS1A10_110T02_9000004234_29452cztM0_level2_quad_clean.evt
Size (bytes)1,212,768,000156,960,000
Size1.1 GB 149.7 MB
Events in quadrant A6,069,928998,837
Events in quadrant B6,276,6891,009,328
Events in quadrant C6,365,285979,624
Events in quadrant D17,155,434882,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262743
B0268023
C0269283
D0599543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12767850.665779%
B127681561.221805%
C127683032.373120%
D12768275621.585213%

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 14482 12770 0 0 0.00% 0.00%
B 14483 12771 6 6 0.04% 0.05%
C 14483 12771 5 5 0.03% 0.04%
D 14483 12770 2056 2056 14.20% 16.10%

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 23632 69.9 1571 1543 316.0
A 3 137 15815 45.16 1571 1543 316.0
A 0 226 13417 37.58 1571 1543 316.0
B 0 229 69148 227.48 1554 1515 297.3
B 12 111 37981 122.65 1554 1515 297.3
B 11 111 34131 109.7 1554 1515 297.3
C 14 238 273284 773.62 1500 1509 351.3
C 3 233 103527 290.4 1500 1509 351.3
C 9 54 56713 157.14 1500 1509 351.3
D 8 195 4379396 12969.21 1417 1375 337.6
D 12 33 2615969 7745.33 1417 1375 337.6
D 13 104 2166180 6412.9 1417 1375 337.6

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