ASTROSAT CZTI

Data Quality Report

Orbit 48328

Creation date: 2024-09-04T15:39:40.072299
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/AS1A13_029T01_9000006422_48328cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48328cztM0_level2_quad_clean.evt
Size (bytes)1,712,004,480364,855,680
Size1.6 GB 348.0 MB
Events in quadrant A24,009,8602,335,307
Events in quadrant B11,864,5982,531,475
Events in quadrant C10,531,6642,438,373
Events in quadrant D15,163,9592,132,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010389916587
B0600998849
C0565027849
D07305211266

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055366
B055767
C055766
D055062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0351
B0351
C0361
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228839424.116593%
B234573551.513408%
C236031120.474516%
D2334110434.468532%

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 33528 23943 244 244 0.73% 1.02%
B 33528 24471 100 100 0.30% 0.41%
C 33526 24574 16 16 0.05% 0.07%
D 33523 24347 734 734 2.19% 3.01%

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 10 83 13150682 24921.0 2533 2480 527.6
A 13 248 895528 1692.68 2533 2480 527.6
A 0 31 56448 102.29 2533 2480 527.6
B 5 255 630665 1225.24 2618 2534 512.7
B 4 21 481829 934.92 2618 2534 512.7
B 0 186 107708 205.15 2618 2534 512.7
C 12 2 182976 291.56 2613 2628 618.6
C 12 249 71614 111.52 2613 2628 618.6
C 12 250 69088 107.44 2613 2628 618.6
D 2 165 1720174 2664.5 2550 2468 644.7
D 12 2 1595499 2471.11 2550 2468 644.7
D 2 249 896550 1386.9 2550 2468 644.7

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