ASTROSAT CZTI

Data Quality Report

Orbit 56870

Creation date: 2026-04-02T16:53:34.434886
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_083T03_9000006562_56870cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56870cztM0_level2_quad_clean.evt
Size (bytes)492,819,840102,096,000
Size470.0 MB 97.4 MB
Events in quadrant A3,867,314685,804
Events in quadrant B4,386,476704,201
Events in quadrant C3,750,426658,396
Events in quadrant D5,706,858566,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162582
B0176973
C0157072
D0216252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68372093.056896%
B68364486.553540%
C68371281.872166%
D683778111.423139%

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 7897 6837 102 102 1.29% 1.49%
B 7896 6836 241 241 3.05% 3.53%
C 7897 6837 36 36 0.46% 0.53%
D 7897 6837 731 731 9.26% 10.69%

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 654020 3467.7 771 752 188.4
A 10 251 96468 508.08 771 752 188.4
A 4 13 48648 254.24 771 752 188.4
B 10 16 554429 3515.15 730 703 157.5
B 5 185 529630 3357.72 730 703 157.5
B 0 197 78419 493.35 730 703 157.5
C 1 16 414914 2035.39 745 736 203.5
C 14 254 107873 526.5 745 736 203.5
C 6 223 82176 400.22 745 736 203.5
D 2 249 1904454 9330.05 723 690 204.0
D 8 240 548685 2685.64 723 690 204.0
D 2 31 102993 501.37 723 690 204.0

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