ASTROSAT CZTI

Data Quality Report

Orbit 53412

Creation date: 2025-08-14T14:13:20.210774
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/AS1C09_011T09_9000006494_53412cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53412cztM0_level2_quad_clean.evt
Size (bytes)777,628,80077,417,280
Size741.6 MB 73.8 MB
Events in quadrant A4,752,286594,602
Events in quadrant B4,681,417623,721
Events in quadrant C13,565,574184,227
Events in quadrant D5,309,831512,017

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184301
B0181651
C0443181
D0201424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61474597.467057%
B61485599.092388%
C6148441071.730644%
D614765510.655604%

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 7307 6147 309 309 4.23% 5.03%
B 7308 6148 361 361 4.94% 5.87%
C 7307 6147 4277 4277 58.53% 69.58%
D 7307 6147 579 579 7.92% 9.42%

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 3 63 1115072 6875.69 648 631 162.1
A 8 231 561665 3461.37 648 631 162.1
A 15 174 169136 1039.61 648 631 162.1
B 4 206 1176198 8789.81 638 616 133.7
B 0 171 274208 2045.64 638 616 133.7
B 4 171 124183 923.91 638 616 133.7
C 1 241 8621438 95856.94 325 322 89.9
C 15 224 2115370 23516.91 325 322 89.9
C 9 38 594012 6601.15 325 322 89.9
D 11 245 1039076 5963.22 614 587 174.1
D 10 172 380666 2182.49 614 587 174.1
D 12 6 350589 2009.78 614 587 174.1

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