ASTROSAT CZTI

Data Quality Report

Orbit 58860

Creation date: 2026-08-14T15:41:19.068063
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_004T07_9000006598_58860cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58860cztM0_level2_quad_clean.evt
Size (bytes)127,425,60027,040,320
Size121.5 MB 25.8 MB
Events in quadrant A1,628,529156,534
Events in quadrant B1,030,748195,241
Events in quadrant C1,033,079175,334
Events in quadrant D890,049167,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059311
B040941
C041451
D037491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169333719.905493%
B16931056.202008%
C1693744.370939%
D1693422.480803%

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 2848 1693 202 202 7.09% 11.93%
B 2848 1693 14 14 0.49% 0.83%
C 2848 1694 21 21 0.74% 1.24%
D 2848 1694 4 4 0.14% 0.24%

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 446610 8544.62 207 202 52.2
A 3 95 173116 3309.72 207 202 52.2
A 3 244 106228 2029.42 207 202 52.2
B 5 172 100176 2081.91 215 207 48.0
B 4 236 39815 824.86 215 207 48.0
B 2 249 15788 324.48 215 207 48.0
C 6 223 68086 1149.34 209 207 59.1
C 12 252 57509 970.25 209 207 59.1
C 12 2 17563 293.87 209 207 59.1
D 5 38 25342 411.23 209 199 61.1
D 8 160 22916 371.55 209 199 61.1
D 6 239 12956 208.65 209 199 61.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct