ASTROSAT CZTI

Data Quality Report

Orbit 59401

Creation date: 2026-09-19T23:11:36.387329
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_033T01_9000006608_59401cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59401cztM0_level2_quad_clean.evt
Size (bytes)462,121,920102,240,000
Size440.7 MB 97.5 MB
Events in quadrant A3,319,926668,976
Events in quadrant B3,607,558721,497
Events in quadrant C3,870,169647,186
Events in quadrant D5,777,691582,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147962
B0155752
C0163272
D0219122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68292133.119051%
B68303054.465593%
C68302864.187408%
D68305047.379209%

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 8964 6831 18 18 0.20% 0.26%
B 8965 6832 54 54 0.60% 0.79%
C 8965 6832 109 109 1.22% 1.60%
D 8965 6832 283 283 3.16% 4.14%

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 15 233 117955 611.77 789 768 191.6
A 14 238 63298 326.43 789 768 191.6
A 3 245 35157 179.53 789 768 191.6
B 6 255 262798 1575.7 776 747 166.3
B 4 201 102397 611.22 776 747 166.3
B 5 185 51572 305.61 776 747 166.3
C 15 208 370675 1771.1 771 765 208.9
C 4 5 201784 962.46 771 765 208.9
C 6 223 146787 699.14 771 765 208.9
D 12 110 2415806 11414.24 760 728 211.6
D 2 31 100976 473.8 760 728 211.6
D 12 248 68938 322.38 760 728 211.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct