ASTROSAT CZTI

Data Quality Report

Orbit 59108

Creation date: 2026-08-31T06:15:20.038596
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_59108cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59108cztM0_level2_quad_clean.evt
Size (bytes)695,661,12081,362,880
Size663.4 MB 77.6 MB
Events in quadrant A3,255,877637,812
Events in quadrant B3,416,837693,415
Events in quadrant C4,165,389613,371
Events in quadrant D14,419,25276,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141582
B0145262
C0166472
D0470902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63451532.411348%
B63451241.954295%
C63451191.875493%
D6345551686.934594%

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 8745 6347 93 93 1.06% 1.47%
B 8745 6347 53 53 0.61% 0.84%
C 8745 6347 52 52 0.59% 0.82%
D 8744 6344 4898 4898 56.02% 77.21%

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 4 249 196195 1131.18 702 684 172.8
A 10 251 131583 757.35 702 684 172.8
A 3 14 80831 463.71 702 684 172.8
B 5 236 179782 1212.12 701 675 147.8
B 4 236 179589 1210.81 701 675 147.8
B 0 197 88399 593.68 701 675 147.8
C 3 233 1089362 5708.49 690 682 190.7
C 15 201 85284 443.61 690 682 190.7
C 12 252 79932 415.55 690 682 190.7
D 12 1 13177446 259515.11 171 164 50.8
D 1 27 338307 6659.43 171 164 50.8
D 2 249 89619 1761.74 171 164 50.8

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