ASTROSAT CZTI

Data Quality Report

Orbit 59110

Creation date: 2026-08-31T09:30:27.577057
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_004T02_9000006600_59110cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59110cztM0_level2_quad_clean.evt
Size (bytes)672,903,36078,589,440
Size641.7 MB 74.9 MB
Events in quadrant A2,923,935613,804
Events in quadrant B3,095,590651,751
Events in quadrant C4,075,497581,803
Events in quadrant D14,324,40093,484

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133781
B0137561
C0164181
D0467992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284741.177594%
B62851241.972951%
C62851692.688942%
D6284526083.704647%

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 7359 6285 22 22 0.30% 0.35%
B 7359 6285 32 32 0.43% 0.51%
C 7359 6285 91 91 1.24% 1.45%
D 7359 6284 4714 4714 64.06% 75.02%

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 125230 734.45 690 671 169.6
A 13 248 44497 258.42 690 671 169.6
A 3 245 33811 195.41 690 671 169.6
B 4 236 229024 1555.55 682 656 146.8
B 5 185 38026 254.55 682 656 146.8
B 0 197 33572 224.21 682 656 146.8
C 3 233 817176 4484.63 666 659 182.1
C 13 3 216006 1182.77 666 659 182.1
C 15 201 203302 1112.99 666 659 182.1
D 12 1 13218097 221538.15 204 195 59.7
D 12 110 150228 2514.62 204 195 59.7
D 6 239 81259 1358.67 204 195 59.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct