ASTROSAT CZTI

Data Quality Report

Orbit 56927

Creation date: 2026-04-06T12:52:23.373304
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_083T14_9000006564_56927cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56927cztM0_level2_quad_clean.evt
Size (bytes)1,064,658,24056,511,360
Size1015.3 MB 53.9 MB
Events in quadrant A14,481,254145,092
Events in quadrant B7,266,643533,989
Events in quadrant C3,793,790565,541
Events in quadrant D13,394,35937,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472251
B0259211
C0156621
D0439461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6135497681.108394%
B6136140522.897653%
C61363245.280313%
D6136585895.469361%

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 7269 6134 4795 4795 65.97% 78.17%
B 7271 6136 1028 1028 14.14% 16.75%
C 7271 6136 191 191 2.63% 3.11%
D 7271 6136 4547 4547 62.54% 74.10%

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 7 64 12967725 136868.27 374 364 94.7
A 10 251 39069 408.52 374 364 94.7
A 3 14 9744 99.0 374 364 94.7
B 5 185 3088838 25320.73 585 566 122.0
B 10 16 875165 7170.83 585 566 122.0
B 5 172 424924 3479.31 585 566 122.0
C 13 3 1039366 5946.37 639 632 174.7
C 15 230 163659 933.27 639 632 174.7
C 14 254 45912 259.21 639 632 174.7
D 12 33 11158098 144630.3 268 256 77.1
D 2 249 357282 4627.85 268 256 77.1
D 8 160 352838 4570.24 268 256 77.1

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