ASTROSAT CZTI

Data Quality Report

Orbit 58844

Creation date: 2026-08-13T11:31:13.345675
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_106T01_9000006596_58844cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58844cztM0_level2_quad_clean.evt
Size (bytes)615,830,40078,396,480
Size587.3 MB 74.8 MB
Events in quadrant A11,019,308191,831
Events in quadrant B3,185,602655,184
Events in quadrant C3,316,669580,759
Events in quadrant D4,786,957509,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370661
B0136041
C0141551
D0183741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252451072.136916%
B62531482.366864%
C62531462.334879%
D62525919.452975%

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 7261 6251 2496 2496 34.38% 39.93%
B 7263 6254 48 48 0.66% 0.77%
C 7263 6254 75 75 1.03% 1.20%
D 7262 6253 540 540 7.44% 8.64%

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 3 95 4661243 54857.8 341 333 85.0
A 3 14 1579064 18581.29 341 333 85.0
A 14 238 1280191 15063.62 341 333 85.0
B 5 185 213704 1431.18 697 672 148.9
B 10 247 53043 351.83 697 672 148.9
B 2 247 48777 323.18 697 672 148.9
C 6 223 384085 2031.1 681 679 188.8
C 14 254 70759 371.25 681 679 188.8
C 7 87 51066 266.93 681 679 188.8
D 8 160 1956616 10444.94 654 624 187.3
D 7 222 58976 311.6 654 624 187.3
D 5 32 53550 282.62 654 624 187.3

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