ASTROSAT CZTI

Data Quality Report

Orbit 53980

Creation date: 2025-09-20T12:24:22.582242
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_041T01_9000006510_53980cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53980cztM0_level2_quad_clean.evt
Size (bytes)624,225,60085,700,160
Size595.3 MB 81.7 MB
Events in quadrant A3,319,048608,440
Events in quadrant B3,795,469664,675
Events in quadrant C5,602,016534,999
Events in quadrant D9,901,263346,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145481
B0156881
C0211131
D0338581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63001302.063492%
B63001832.904762%
C630079112.555556%
D6300248439.428571%

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 7440 6301 85 85 1.14% 1.35%
B 7440 6301 109 109 1.47% 1.73%
C 7440 6301 747 747 10.04% 11.86%
D 7440 6300 2364 2364 31.77% 37.52%

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 15 174 465705 2889.61 649 634 160.9
A 10 253 62087 381.82 649 634 160.9
A 7 14 48148 295.22 649 634 160.9
B 5 185 406268 2940.36 654 633 138.0
B 5 250 334583 2420.73 654 633 138.0
B 0 213 128285 925.32 654 633 138.0
C 1 241 2214999 13049.43 616 610 169.7
C 12 249 445112 2619.46 616 610 169.7
C 12 2 163782 961.58 616 610 169.7
D 8 176 6870143 46756.26 502 478 146.9
D 2 172 463355 3150.43 502 478 146.9
D 6 239 346796 2357.1 502 478 146.9

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