ASTROSAT CZTI

Data Quality Report

Orbit 59051

Creation date: 2026-08-28T03:02:32.439628
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_59051cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59051cztM0_level2_quad_clean.evt
Size (bytes)878,883,84073,082,880
Size838.2 MB 69.7 MB
Events in quadrant A3,535,189621,982
Events in quadrant B3,319,336673,231
Events in quadrant C10,028,698459,498
Events in quadrant D15,166,46922,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148171
B0140981
C0341601
D0493471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62431822.915265%
B62441111.777707%
C6244181329.035874%
D6243602596.508089%

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 7423 6244 107 107 1.44% 1.71%
B 7424 6245 26 26 0.35% 0.42%
C 7424 6245 1748 1748 23.55% 27.99%
D 7422 6242 5358 5358 72.19% 85.84%

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 14 238 364217 2126.79 699 682 170.9
A 3 244 162822 948.57 699 682 170.9
A 10 251 129949 756.25 699 682 170.9
B 2 249 163488 1096.11 695 670 148.5
B 4 236 144175 966.09 695 670 148.5
B 5 236 128354 859.58 695 670 148.5
C 15 219 6362186 37463.6 618 613 169.8
C 4 5 803284 4726.97 618 613 169.8
C 12 252 116405 681.9 618 613 169.8
D 12 1 13794075 358371.34 127 121 38.5
D 6 239 460280 11955.08 127 121 38.5
D 2 62 343767 8928.03 127 121 38.5

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