ASTROSAT CZTI

Data Quality Report

Orbit 57989

Creation date: 2026-06-16T23:14:52.147582
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_031T01_9000006584_57989cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57989cztM0_level2_quad_clean.evt
Size (bytes)557,913,60086,474,880
Size532.1 MB 82.5 MB
Events in quadrant A4,150,784597,385
Events in quadrant B7,901,253500,869
Events in quadrant C4,220,593558,575
Events in quadrant D3,909,537538,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164911
B0276031
C0168811
D0157471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60533125.154469%
B6053177229.274740%
C60533916.459607%
D60531622.676359%

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 7223 6054 205 205 2.84% 3.39%
B 7223 6054 1445 1445 20.01% 23.87%
C 7223 6054 255 255 3.53% 4.21%
D 7223 6054 105 105 1.45% 1.73%

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 10 251 1462342 8627.3 678 660 169.4
A 3 14 22620 129.61 678 660 169.4
A 3 245 20966 119.85 678 660 169.4
B 10 128 5255313 40891.54 596 575 128.5
B 4 171 48108 369.89 596 575 128.5
B 0 171 37694 288.85 596 575 128.5
C 15 224 1141009 6441.2 645 639 177.0
C 15 201 306881 1729.76 645 639 177.0
C 14 254 187442 1055.13 645 639 177.0
D 12 110 822654 4410.14 651 623 186.4
D 2 31 147981 790.57 651 623 186.4
D 5 32 103807 553.58 651 623 186.4

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