ASTROSAT CZTI

Data Quality Report

Orbit 56184

Creation date: 2026-02-15T13:15:47.005850
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_083T04_9000006550_56184cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56184cztM0_level2_quad_clean.evt
Size (bytes)523,460,16092,825,280
Size499.2 MB 88.5 MB
Events in quadrant A8,179,454492,798
Events in quadrant B3,572,230687,138
Events in quadrant C3,320,964607,004
Events in quadrant D3,782,516556,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289151
B0153721
C0148421
D0159901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706176526.319714%
B67071422.117191%
C67071251.863724%
D67072323.459073%

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 7641 6707 1360 1360 17.80% 20.28%
B 7642 6707 36 36 0.47% 0.54%
C 7642 6708 43 43 0.56% 0.64%
D 7642 6708 167 167 2.19% 2.49%

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 32 2494949 15523.0 639 623 160.7
A 0 212 1624335 10104.88 639 623 160.7
A 7 64 442177 2747.93 639 623 160.7
B 1 207 313177 2019.65 721 694 154.7
B 5 185 99997 641.82 721 694 154.7
B 10 247 53802 343.25 721 694 154.7
C 6 223 346844 1798.14 711 704 192.5
C 12 252 117510 606.79 711 704 192.5
C 11 244 23168 116.7 711 704 192.5
D 11 129 414951 2085.91 702 668 198.6
D 8 129 96377 481.89 702 668 198.6
D 14 52 95402 476.98 702 668 198.6

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