ASTROSAT CZTI

Data Quality Report

Orbit 55970

Creation date: 2026-02-06T03:11:05.450584
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/AS1A14_066T02_9000006546_55970cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55970cztM0_level2_quad_clean.evt
Size (bytes)611,660,16087,330,240
Size583.3 MB 83.3 MB
Events in quadrant A11,253,392378,145
Events in quadrant B3,457,785678,558
Events in quadrant C3,181,407598,947
Events in quadrant D4,238,951530,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379242
B0148433
C0144302
D0174582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570280242.648402%
B6570921.400304%
C6570771.171994%
D65705318.082192%

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 8835 6572 2675 2675 30.28% 40.70%
B 8835 6572 21 21 0.24% 0.32%
C 8835 6572 47 47 0.53% 0.72%
D 8835 6572 476 476 5.39% 7.24%

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 12 115 8076184 58157.53 559 544 138.9
A 7 64 367482 2642.54 559 544 138.9
A 15 32 319931 2300.1 559 544 138.9
B 0 231 183088 1221.4 698 673 149.3
B 0 199 162059 1080.59 698 673 149.3
B 0 229 112917 751.55 698 673 149.3
C 13 3 162926 855.5 687 683 189.6
C 12 249 100478 526.21 687 683 189.6
C 12 112 52604 273.78 687 683 189.6
D 7 96 1375352 7401.9 653 625 185.7
D 5 173 50128 266.54 653 625 185.7
D 7 129 49893 265.27 653 625 185.7

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